Question

A machine operating at 5 watt lifted an iron ball vertically upwards to a height of 50 m in 5 sec . What is the mass of the ball? how much force was used . What was the work done

plz fast help

Answer 1

Answer:

Energy given to the ball by the hand is F.s, where s is the distance for which force is applied which is 0.2m

By conservation of energy,

mgh=F.s

mgh=0.2×10×2.2=4.4

∴F×0.2=4.4

∴F=

0.2

4.4

=22N