Define 1 unit of work.

Important Questions on Work and Energy

EASY

9th CBSE

IMPORTANT

Essentials of PHYSICS Class IX>Chapter 4 - Work and Energy>Assignment>Q 5

Is work a scalar or a vector quantity?

EASY

9th CBSE

IMPORTANT

Essentials of PHYSICS Class IX>Chapter 4 - Work and Energy>Assignment>Q 6

What is the work done against "gravity" when a body is moved along a horizontal surface?

EASY

9th CBSE

IMPORTANT

Essentials of PHYSICS Class IX>Chapter 4 - Work and Energy>Assignment>Q 7

How much work is done by a man who tries to push a wall of a house but fails to do so?

EASY

9th CBSE

IMPORTANT

Essentials of PHYSICS Class IX>Chapter 4 - Work and Energy>Assignment>Q 8

In which of the following case the work done by a force is maximum? When the angle between the direction of force and direction of motion is $0^o$ or ${45}^o$ or ${90}^o$. 

EASY

9th CBSE

IMPORTANT

Essentials of PHYSICS Class IX>Chapter 4 - Work and Energy>Assignment>Q 9

What is the work done on a body moving in a circular path?

EASY

9th CBSE

IMPORTANT

Essentials of PHYSICS Class IX>Chapter 4 - Work and Energy>Assignment>Q 10

What would be the amount of work done on an object, if the displacement is zero?

EASY

9th CBSE

IMPORTANT

Essentials of PHYSICS Class IX>Chapter 4 - Work and Energy>Assignment>Q 11

The formula for work done $\left(W\right)$ on a body when the body makes an angle $A$ to the direction of force $\left(F\right)$ is $W=Fs \_\_\_\_\_$,    $\left(cos\mathit{ }A\mathit{ }\mathit{/}\mathit{ }sin\mathit{ }A\mathit{ }\mathit{/}\mathit{ }tan\mathit{ }A\right)$

EASY

9th CBSE

IMPORTANT

Essentials of PHYSICS Class IX>Chapter 4 - Work and Energy>Assignment>Q 12

What is the angle (in degrees) between the direction of force and the direction of motion of a body so that work done is zero?