Question

Calculate the work done in raising a stone of mass 10 kg through a vertical height of 5 m . ( g = 9.8 m/s²)

Answer 1

Answer:

here

the work done = potential energy = m.g.h

so,

the work done = 10 x 9.8 x 5

= 490j

thus the work done in raising a stone of mass 10 kg through a vertical height of 5 m = 490j

Answer 2

Answer:

Work is - 490 J.

Step-by-step explanation:

m = 10 kg

s = 5 m

g = 9.8 m/s²

F = m g

=> F = 10 * (-9.8)

=> F = - 98 N

W = F * s

=> W = (-98) * 5

=> W = - 490 J

Here, negative sign is because direction of force and direction of displacement are opposite. So work is negative.