Question

A body of mass 1 kg is taken from infinity to a point P. when the body reaches that point,it has a speed of 2m/s. the work done by conservative force is -5J. which of the following is true(assuming non-conservative and pseudo-forces to be absent).

a) work done by applied force is +7J.

b)the total energy possessed by the body at P is +7J

c)The potential energy possessed by the bodyat P is +5J

d) work done by all foeces together is equal to the change in KE.

Answer 1

here option d will be the correct option as conservation nof energy must be satisfied....