A bolt of mass 0.3 kg falls from the ceiling of an elevator moving down with a uniform speed of 7ms^(-1). If hits the floors of the elevator (length of the elevator 3m) and does not rebound. What is the heat produced by the impact?

A bolt of mass 0.3 kg falls from the ceiling of an elevator moving dow

1.	A bolt of mass 0.3 kg falls from the ceiling of an elevator moving down with a uniform speed of 7ms^(-1). If hits the floors of the elevator (length of the elevator 3m) and does not rebound. What is the heat produced by the impact?
Answer» SOLUTION :Mass `m=0.3kg` HEIGHT `h=3m` Accleration due to gravity `g=9.8ms^(-2)`. Potential energy lost by the bolt = mgh `=0.3xx9.8xx3=8.82J` As the bolt does not rebound, the energy is CONVERTED into HEAT. Heat produced = 8.82 J.