Turning Effect of Forces - Important Terms

Class 09 FBISE Physics - Turning Effect of Forces - Important Terms

Turning effect of forcesPhysics

Turning Effect of Forces - Numerical Problems

Class 09 FBISE Physics - Turning Effect of Forces - Numerical Problems

Turning effect of forcesPhysics

Turning Effect of Forces - Exercise

Class 09 FBISE Physics - Turning Effect of Forces - Exercise

Turning effect of forcesPhysics

Turning Effect of Forces - MCQs

Class 09 FBISE Physics - Turning Effect of Forces - MCQs

Turning effect of forcesPhysics

Turning Effect of Forces - Notes

Class 09 FBISE Physics - Turning Effect of Forces - Notes

Turning effect of forcesPhysics

A block of mass 10 kg is suspended at a distance of 20 cm from the center of a uniform bar 1 m long.

Class 9 FBISE Physics - Turning effect of forces - A block of mass 10 kg is suspended at a distance of 20 cm from the center of a uniform bar 1 m long.

PhysicsTurning effect of forces

A nut has been tightened by a force of 200 N using a 10 cm long spanner.

Class 9 FBISE Physics - Turning effect of forces - A nut has been tightened by a force of 200 N using a 10 cm long spanner.

PhysicsTurning effect of forces

Two blocks of mass 5 kg and 3 kg are suspended by the two strings as shown

Class 9 FBISE Physics - Turning effect of forces - Two blocks of mass 5 kg and 3 kg are suspended by the two strings as shown

PhysicsTurning effect of forces

A picture frame is hanging by two vertical strings.

Class 9 FBISE Physics - Turning effect of forces - A picture frame is hanging by two vertical strings.

PhysicsTurning effect of forces

The steering of a car has a radius of 16 cm.

Class 9 FBISE Physics - Turning effect of forces - The steering of a car has a radius of 16 cm.

PhysicsTurning effect of forces

A force is acting on a body making an angle of 30⁰ with the horizontal.

Class 9 FBISE Physics - Turning effect of forces - A force is acting on a body making an angle of 30⁰ with the horizontal.

PhysicsTurning effect of forces

A force of 100 N is applied perpendicularly on a spanner at a distance of 10 cm from a nut

Class 9 FBISE Physics - Turning effect of forces - A force of 100 N is applied perpendicularly on a spanner at a distance of 10 cm from a nut

PhysicsTurning effect of forces

Find the magnitude and direction of a force, if its x-component

Class 9 FBISE Physics - Turning effect of forces - Find the magnitude and direction of a force, if its x-component

PhysicsTurning effect of forces

Find the perpendicular components of a force

Class 9 FBISE Physics - Turning effect of forces - Find the perpendicular components of a force

PhysicsTurning effect of forces

Find the resultant of the following forces:

Class 9 FBISE Physics - Turning effect of forces - Find the resultant of the following forces:

PhysicsTurning effect of forces

Why the height of the vehicles is kept as low as possible?

Class 9 FBISE Physics - Turning effect of forces - Why the height of the vehicles is kept as low as possible?

PhysicsTurning effect of forces

Why a body cannot be in equilibrium due to a single force acting on it?

Class 9 FBISE Physics - Turning effect of forces - Why a body cannot be in equilibrium due to a single force acting on it?

PhysicsTurning effect of forces

Think of a body that is at rest but not in equilibrium.

Class 9 FBISE Physics - Turning effect of forces - Think of a body that is at rest but not in equilibrium.

PhysicsTurning effect of forces

Give an example of a moving body, which is in equilibrium.

Class 9 FBISE Physics - Turning effect of forces - Give an example of a moving body, which is in equilibrium.

PhysicsTurning effect of forces

Differentiate between the following: (i)Torque and the couple (ii)Stable and neutral equilibrium

Class 9 FBISE Physics - Turning effect of forces - Differentiate between the following: (i) Torque and the couple (ii) Stable and neutral equilibrium

PhysicsTurning effect of forces

Define the following (i) Resultant Vector (ii) Torque (iii) Centre of mass (iv) Centre of gravity

Class 9 FBISE Physics - Turning effect of forces - Define the following (i) Resultant Vector (ii) Torque (iii) Centre of mass (iv) Centre of gravity

PhysicsTurning effect of forces

Why a vehicle is made heavy at its bottom?

Class 9 FBISE Physics - Turning effect of forces - Why a vehicle is made heavy at its bottom

PhysicsTurning effect of forces

Discuss the stability and position of the center of mass with the reference of example?

Class 9 FBISE Physics - Turning effect of forces - Discuss the stability and position of the center of mass with the reference of example?

PhysicsTurning effect of forces

Explain what is meant by stable, unstable, and neutral equilibrium.

Class 9 FBISE Physics - Turning effect of forces - Explain what is meant by stable, unstable, and neutral equilibrium.

PhysicsTurning effect of forces

Define terminal velocity?

Class 9 FBISE Physics - Turning effect of forces - Define terminal velocity?

PhysicsTurning effect of forces

How does a paratrooper come down?

Class 9 FBISE Physics - Turning effect of forces - How does a paratrooper come down?

PhysicsTurning effect of forces

Why there is a need for a second condition for equilibrium if a body satisfies the first condition for equilibrium?

Class 9 FBISE Physics - Turning effect of forces - Why there is a need for a second condition for equilibrium if a body satisfies the first condition for equilibrium?

PhysicsTurning effect of forces

What is the second condition for equilibrium?

Class 9 FBISE Physics - Turning effect of forces - What is the second condition for equilibrium?

PhysicsTurning effect of forces

Explain the first condition for equilibrium.

Class 9 FBISE Physics - Turning effect of forces - Explain the first condition for equilibrium.

PhysicsTurning effect of forces

When a body is said to be in equilibrium?

Class 9 FBISE Physics - Turning effect of forces - When a body is said to be in equilibrium?

PhysicsTurning effect of forces

Define a couple. Describe its role in steering wheel double-arm spanner?

Class 9 FBISE Physics - Turning effect of forces - Define a couple. Describe its role in steering wheel double-arm spanner?

PhysicsTurning effect of forces

Explain an experiment to find the center of gravity of a four-sided plate of uniform thickness. How can you verify your answer by using geometry?

Class 9 FBISE Physics - Turning effect of forces - Explain an experiment to find the center of gravity of a four-sided plate of uniform thickness. How can you verify your answer by using geometry?

PhysicsTurning effect of forces

List the center of gravity of some symmetrical objects?

Class 9 FBISE Physics - Turning effect of forces - List the center of gravity of some symmetrical objects?

PhysicsTurning effect of forces

Define the center of gravity?

Class 9 FBISE Physics - Turning effect of forces - Define the center of gravity?

PhysicsTurning effect of forces

Explain how the center of mass helps the system to move as well as rotate?

Class 9 FBISE Physics - Turning effect of forces - Explain how the center of mass helps the system to move as well as rotate?

PhysicsTurning effect of forces

Describe the principle of the moment?

Class 9 FBISE Physics - Turning effect of forces - Describe the principle of the moment?

PhysicsTurning effect of forces

What do you mean by newton-meter (Nm)?

Class 9 FBISE Physics - Turning effect of forces - What do you mean by newton-meter (Nm)?

PhysicsTurning effect of forces

Define the moment arm.

Class 9 FBISE Physics - Turning effect of forces - Define the moment arm.

PhysicsTurning effect of forces

What do you mean by a line of action of a force?

Class 9 FBISE Physics - Turning effect of forces - What do you mean by a line of action of a force?

PhysicsTurning effect of forces

Why it is easy to tighten a nut using a spanner of the longer arm than a spanner of the shorter arm?

Class 9 FBISE Physics - Turning effect of forces - Why it is easy to tighten a nut using a spanner of the longer arm than a spanner of the shorter arm?

PhysicsTurning effect of forces

Why the handle of a door is fixed near the outer edge a door?

Class 9 FBISE Physics - Turning effect of forces - Why the handle of a door is fixed near the outer edge a door

PhysicsTurning effect of forces

Define torque. What is its unit? On what factors does torque (moment of a force) depends?

Class 9 FBISE Physics - Turning effect of forces - Define torque. What is its unit? On what factors does torque (moment of a force) depends?

PhysicsTurning effect of forces

Name some objects that work by the turning effects of forces.

Class 9 FBISE Physics - Turning effect of forces - Name some objects that work by the turning effects of forces.

PhysicsTurning effect of forces

What do you mean by the axis of rotation?

Class 9 FBISE Physics - Turning effect of forces - What do you mean by the axis of rotation?

PhysicsTurning effect of forces

What do you mean by a rigid body?

Class 9 FBISE Physics - Turning effect of forces - What do you mean by a rigid body?

PhysicsTurning effect of forces

Why it is easy to open and close the door by pulling or pushing it as it handles?

Class 9 FBISE Physics - Turning effect of forces - Why it is easy to open and close the door by pulling or pushing it as it handles?

PhysicsTurning effect of forces

Briefly explain the determination of a force from its perpendicular components?

Class 9 FBISE Physics - Turning effect of forces - Briefly explain the determination of a force from its perpendicular components?

PhysicsTurning effect of forces

How can a force be resolved into its rectangular components?

Class 9 FBISE Physics - Turning effect of forces - How can a force be resolved into its rectangular components?

PhysicsTurning effect of forces

What is meant by trigonometry? Give some important trigonometric ratios.

Class 9 FBISE Physics - Turning effect of forces - What is meant by trigonometry? Give some important trigonometric ratios.

PhysicsTurning effect of forces

How head to tail rule helps to find the resultant forces?

Class 9 FBISE Physics - Turning effect of forces - How head to tail rule helps to find the resultant forces?

PhysicsTurning effect of forces

Define the resultant vector?

Class 9 FBISE Physics - Turning effect of forces - Define the resultant vector?

PhysicsTurning effect of forces

Explain the unlike parallel forces in the given figure?

Class 9 FBISE Physics - Turning effect of forces - Explain the unlike parallel forces in the given figure?

PhysicsTurning effect of forces

Many people push a bus to start it why do all of them push it in the same direction?

Class 9 FBISE Physics - Turning effect of forces - Many people push a bus to start it why do all of them push it in the same direction?

PhysicsTurning effect of forces

What is the difference between like and unlike parallel forces?

Class 9 FBISE Physics - Turning effect of forces - What is the difference between like and unlike parallel forces?

PhysicsTurning effect of forces

What is meant by parallel forces?

Class 9 FBISE Physics - Turning effect of forces - What is meant by parallel forces?

PhysicsTurning effect of forces

With a little effort, we can learn to balance a stick vertically up on our fingertip how this is possible?

Class 9 FBISE Physics - Turning effect of forces - With a little effort, we can learn to balance a stick vertically up on our fingertip how this is possible?

PhysicsTurning effect of forces

Women and children in the villages often carry pitchers with water on their heads how this is possible?

Class 9 FBISE Physics - Turning effect of forces - Women and children in the villages often carry pitchers with water on their heads how this is possible?

PhysicsTurning effect of forces

What is the joker doing in the figure?

Class 9 FBISE Physics - Turning effect of forces - What is the joker doing in the figure?

PhysicsTurning effect of forces

Can the nut of the axle of a bike be loosened with a hand why do we use a spanner for this purpose?

Class 9 FBISE Physics - Turning effect of forces - Can the nut of the axle of a bike be loosened with a hand why do we use a spanner for this purpose?

PhysicsTurning effect of forces