High School

A potter lifts a luggage of 15 kg from the ground and puts it on his head 1.5 m above the ground. Calculate the work done.

a. 147 J
b. 220 J
c. 225 J
d. 235 J

Answer :

Final answer:

The work done by the potter in lifting the luggage is 220 J.

Explanation:

To calculate the work done, we need to use the formula:

Work = Force × Distance × cos(θ)

In this case, the force is the weight of the luggage, which is 15 kg × 9.8 m/s² = 147 N. The distance is the height the luggage was lifted, which is 1.5 m. The angle θ is 0° since the force is applied vertically.

Using the formula, we can calculate the work as follows:

Work = 147 N × 1.5 m × cos(0°)

cos(0°) = 1, so the work done is:

Work = 147 N × 1.5 m × 1 = 220 J.

Therefore, the correct answer is 220 J (b).