Question

QUESTION 11
A coolie is walking on a railway platform with a
load of 25 kg on his head. How much work is done
by coolie and why?​

Answer 1

Answer:

A coolie is walking on a railway platform with a

load of 25 kg on his head. How much work is done

by coolie and why?

Explanation:

A coolie is walking on a railway platform with a

load of 25 kg on his head. How much work is done

by coolie and why?

Answer 2

Answer:

0

Explanation:

Work done W=F⋅dx=F⋅ dt/dx⋅dt

Work done by a force on an object is zero, if:

The force is always perpendicular to its velocity ( dt/dx=0).

The object moves in such a way that the point of application of the force remains fixed (dx=0).