Answer:
Step-by-step explanation:
The work done by the gravitational force as an object is moved through a height, h is mgh.
i.e Work done = mgh.
- where g is the "acceleration due to gravity"
- m is "mass of the body"
According to the question we have, mass of man = 80 kg and height is 3m
On substituting the values in the above formula, we have,
- Work done = 80 ×9.8 × 3
- Work done = 784 × 3
- Work done = 2352 Joules
Hence, the work done by the gravity is 2352 Joules