CHAPTER-11 WORK AND ENERGY (SET-1)

Questions in this test

1. Work done by the centripetal force is ______.
2. When a body falls freely towards the earth then its total energy _____.
3. If work is done at a faster rate, then ________
4. Moon revolves around the earth due to the gravitational force $(F)$ of earth on the moon. The work done by the gravitational force is. $($r = Radius of circular orbit of moon$)$
5. Work done by a body is ________
6. 1 w.s. = ____?
7. Scientifically, work is said to be done in which of the following cases.
8. P.E. of a spring increases when it is in the state of
9. When speed of the moving object is doubled its
10. A ball is thrown vertically upwards its velocity keeps on decreasing. What happens to its kinetic energy when it reaches the maximum height?