Question

Can physics measure the work a porter does? What do you need to know to measure a porters work? What produces work, and how is power different from work?

Answer 1

Answer:

No

Explanation:

According to physics, the work done by porter is zero but in reality porter gets tired as muscular energy is being used up.

In physics, work is the dot product of force and displacement. when the porter moves with the luggage, the weight act downwards while the porter moves forward. The angle between force and displacement is 90°. Thus, work done by the porter is zero.

The muscles are doing work in this case which is not calculated in physics.

Power is the rate of energy consumed during the work.