Problema Solution
A 20 kg body is dropped from a height of 10 m and penetrates 0.50 m into a bof of soil. What is the average retarding force that the soil exerts on the body?
Answer provided by our tutors
work done by soil=change in kinetic energy of the body
=potential energy
=mgh
=20x10.5x9.8
=2058
work done by soil=.5x F=2058
average force=4116