Question

The amount of work done to lift a body of mass 3 kg to a height of 10 m, above the ground is...........(g = 9.8m/s²)

• A. 294 J
• B. 196 J
• C. 490 J
• D. 200 J

Answer 1

Answer:

A. 294 J

Equation to find out the work done is,

Work = Force x Displacement

Where,

Force = mass x acceleration due to gravity

Data given in the question,

• mass = 3 kg

• height / displacement (S)= 10 m

• acceleration due to gravity, g = 9.8m/s²

So,

W = F x S

= m x g x S

= 3 x 9.8 x 10

= 294 J