Question

A child in a tree house uses a rope attached to a basket to lift a 24 N dog upward through a distance of 4.9 m into the house.
How much work does the child do in lifting the dog?

Answer 1

Answer:

117.6 Joules

Explanation:

We are given;

• Force of the dog is 24 N
• Distance upward is 4.9 m

We are required to calculate the work done

• Work done is the product of force and distance
• That is; Work done = Force × distance
• It is measured in Joules.

In this case;

Force applied is equivalent to the weight of the dog.

Work done = 24 N × 4.9 m

                  = 117.6 Joules

Hence, the work done in lifting the dog is 117.6 Joules