Question

A porter, carrying a load on his head is moving from one platform to the other.

What will be the amount of work done by the gravity in this case?

Justify your answer with the help of a suitable reason.​

Answer 1

Answer:

Explanation:

the work done by gravity in this case will be 0

becuz we know that if displacement of a body is perpendicular to the direction in which force is acting on the body,then work done by that force on the body is zero.

here,the displacement of the load on the porter's head is in the horizontal direction,but the gravity acting on the body is vertically downwards.

so the angle between force of gravity and the displacement of load is 90 degrees.

so W=F.S.cosФ⇒F.S.cos90 as cos 90=0

W=0

so,that's it

Hope this helps you my dear friend

thanks :)

pls mark as brainliest