Question

product of weight and vertical displacement of a body is an expression for​

Answer 1

Answer:

work done/energy expended against/by force of weight

Explanation:

weight = mg (near surface of earth)

displacement = s (either vertically upwards or downwards)

let theta be the angle between displacement vector and force vector

since displacement vertical, theta = 0 or 180

Work = weight (force by gravity) . displacement

= mgscos(theta)

= mgs or -mgs

(depending on direction of vertical displacement, work done by external force or by gravity)