EXAMPLE 1: THE WORKENERGY RELATION
Calculate
the power of the frictional force to do work on the grinding disk and its power
to do work on the work piece B. Assume the grinding wheel and connection have a
total mass of m. What happens to the
difference in the power?
Solution:
(a)
Power of friction to do work on the grinding wheel
Kinetics:
_{}
_{}
_{}

Kinematics:
_{}
_{}

(b)
Power of friction to do work on work piece B
_{}
The difference in the power between P_{A} and P_{B} appears in the form of heat that ends up heating the surfaces.