Question

How much work is done in lifting a 6kg object from the ground to a height of 4m?

A 12n object is lifted 5m how much work is done


How much work is done if a 5n object is lifted from the ground to a height of 8m?

How much gravitational potential energy does the object gain?

Answer 1

Work = F*h = mg * h = 6*9.8 * 4=235.2 J.

Work = F*h = 12 * 5 = 60 J.

Work = 5*8 = 40 J.

PE = mg*h = 5 * 8 = 40 J.