Question

Calculate the work done to take an object of mass 10 g to a height of 100 m.

Answer 1

Answer:

Answer: 2 kilojoules.

Explanation:

Given : Mass of the object = m = 20 kg. Height to which the object is raised = 10 = h metres. Acceleration due to gravity = g = 10 m/s²

To find : Work done = m×g×h (potential energy) Work done = 20×10×10. Work done= 200×10. Work done = 2000 joules.

Hope it helps..

Answer 2

Answer:

W = mgh

Explanation:

g= 9.8m/s

m= 0.01kg

h =10m

mgh= 0.01×9.8×100

= 9.8 J