A man lift a load of 20kg through a height of 4m in 10sec. calculate the workdone

The answer to your question is Work = 784.8 Joules

Explanation:

Data

mass = 20 kg

height = 4 m

time = 10 s

Mechanic work is defined as the force applied to a body so it moves a distance.

Formula

Work = force x distance

Process

1. - Calculate the force

Force = mass x gravity

-Substitution

Force = 20 x 9.81

-Result

Force = 196.2 N

2. - Calculate the Work

Work = 196.2 x 4

-Result

Work = 784.8 Joules