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18 paź 2021 · The principal energy loss when a basketball ball bounces off the ground is most likely due to the non-adiabatic compression of the ball amterial and the air inside the ball - some of the energy is converted to heat and cannot be recovered.
In this lab you will be exploring energy conservation during collisions. You will do this by studying how a ball bounces (‘collides’) on different surfaces, and by calculating the energy lost (to sound, to friction, etc.) from each collison with the ground.
On the next bounce, this energy transfer repeats, but the ball doesn’t rise back up to the height it fell. At some point along its path, it lost energy. In this experiment, you will investigate the energy of a bouncing ball and seek to determine where, when, and how it loses energy.
It may rebound with exactly the same speed as the speed at which it hit the ground. This is an elastic collision. It may come to a complete rest, for example if it were a ball of soft putty. I shall call this a completely inelastic collision. It may bounce back, but with a reduced speed.
Describe when E is and is not conserved. Energy is conserved when gravity is involved. The ball has the force of gravity, which is conserved while traveling down towards the ground. While it is traveling the potential energy is being transformed into kinetic energy, which demonstrates a conservation of energy.
We can introduce the “mechanical energy”, \(E\), of an object as the sum of the potential and kinetic energies of the object: \[E=U+K\] If the object started at position \(A\) , with potential energy \(U_A\) and kinetic energy \(K_A\) , and ended up at position \(B\) with potential energy \(U_B\) and kinetic energy \(K_B\) , then we can ...
Problem Statement: A tennis ball of mass m = 50 g is dropped from a height h = 8 m without initial speed. The tennis ball reaches 75% of its initial height after bouncing on the floor, determine the energy it has lost in the rebound. Solution: As the ball loses energy in the rebound, its mechanical energy is not conserved.
