Question

1. A body of mass 15 kg undergoes downward
displacement of 40 m under the effect of
gravitational force. Calculate work done.
(Take g = 10 ms-?)
2. A body of mass 120 g is taken vertically
upwards to reach the height of 5 m. Calculate
work done. (Take g = 10 ms.)​

Answer 1

Answer:

1. work done = mgh

15*10*40

6000 joules

2. work done =mgh

120*5*-10

- 6000 joules

Answer 2

Answer:

the first one 6000j

the second one -6000j