bonkysleuth SG When a stone drops to the ground from a height of 5 m, its gravitational potential energy decreases by 10 J. What is the mass of the stone? Tried to calculate the g.p.e at the top part, which is m X 10ms-2 X 5. but i don't have any idea how to go about doing the next step. By using principle of conservation of energy?
Uncertain SG Δmgh = mgΔh (as only the height changes) Δ in Energy = 10J 10 = mgΔh Calculate the ‘m’ yourself PS: I just provide more explanation to wishboy answer.
eagle SG Even more info to aboveBy using principle of conservation of energy?No, you will not be using any conservation of energy at all. Conservation of energy is invoked only when your equation is something liketotal initial energy = total final energy