Question

this is the picture please answer it
and this is phonics​

Answer 1

Answer:

4,000 joules.

Explanation:

Question says that, A worker is holding a box of 200kg to a height of 2m for 10 seconds.

Find the work done by the worker.

Here,

The work done is a potential energy.

We know,

→ P.E.(potential energy) = mgh

Where,

m is the mass of the object.

g(acceleration due to gravity) = 9.8m/s

h is the height.

Substituting the given values,

→ 200 × 2 × 10

→ 4000 joules.

∴ Work done my the worker is 4,000 joules.