MEDIUM
9th CBSE
IMPORTANT
Earn 100

Derive the formula for potential energy.

Important Questions on Work and Energy

EASY
9th CBSE
IMPORTANT
Full Marks Science>Chapter 11 - Work and Energy>ADDITIONAL QUESTIONS SOLVED>Q 1
The unit of work is joule. The other physical quantity that has same unit is _________.
MEDIUM
9th CBSE
IMPORTANT
Full Marks Science>Chapter 11 - Work and Energy>ADDITIONAL QUESTIONS SOLVED>Q 2
The spring will have maximum potential energy when _____.
EASY
9th CBSE
IMPORTANT
Full Marks Science>Chapter 11 - Work and Energy>ADDITIONAL QUESTIONS SOLVED>Q 3
The energy possessed by an oscillating pendulum of a clock is _____.
EASY
9th CBSE
IMPORTANT
Full Marks Science>Chapter 11 - Work and Energy>ADDITIONAL QUESTIONS SOLVED>Q 4
The gravitational potential energy of an object is due to :
EASY
9th CBSE
IMPORTANT
Full Marks Science>Chapter 11 - Work and Energy>ADDITIONAL QUESTIONS SOLVED>Q 5
A ball is dropped from the height of 10 m.
EASY
9th CBSE
IMPORTANT
Full Marks Science>Chapter 11 - Work and Energy>ADDITIONAL QUESTIONS SOLVED>Q 6
If the velocity of the body is doubled, its kinetic energy _____.
EASY
9th CBSE
IMPORTANT
Full Marks Science>Chapter 11 - Work and Energy>ADDITIONAL QUESTIONS SOLVED>Q 7
How much time will be required to perform 520 J of work at the rate of 20 W?
EASY
9th CBSE
IMPORTANT
Full Marks Science>Chapter 11 - Work and Energy>ADDITIONAL QUESTIONS SOLVED>Q 8

A student carries a bag weighing 5 kg from the ground floor to his class on the first floor that is 2 m high. The work done by the boy is ______.

(g=10 m/s2)