Question

A porter lifts a suitcase weighing 20 kg from the platform and puts it on his head 2.0 m above the platform. Calculate the work done by the porter on the suitcase ?

Answer 1

Answer :-

• Work done by the porter on the suitcase is 400J.

Explanation :-

Given:

Mass (m) = 20Kg

Height (g) = 2.0m

Acc.due to gravity (g) = 10m/s²

To find:

Work done (Potential energy)

Solution:

We know,

› Work done = mgh

⇒ 20 × 10 × 2

⇒ 200 × 2

⇒ 400

∴ Work done by the porter on the suitcase is 400J.