Question

The total work done on a particle is equal to change in its KE:
A)always
B)Only if forces acting on it are conservative
C)Only if gravitational force acts on it
D)Only if elastic force acts on it

Answer 1

always..

Answer 2

why ?

Answer 3

I dont think it is always

Answer 4

ohh,,yes,,must be for conservative only..

Answer 5

coz,
work done = -(potential energy) for conservative forces

Answer 6

exactly

Answer 7

and on that application, we come to conservation of energy,,hmm

Answer 8

oh but answer is A :P

Answer 9

Even I thought the same as you