Problem 9-2 from page 287 in Young and Freedman
Compute the angular velocity in 
of the
crankshift of an automobile engine that is rotating at 4200
.
Problem 9-24 from page 288 in Young and Freedman
A machine part has a disk of radius 4.50 cm fixed to the
end of a shaft that has a radius 0.25 cm. If the
tangential speed of a point on the surface of the shaft is
, what is the tangential speed of a point
on the rim of the disk?
Examples 10-11 from page 308 in Young and Freedman
An electric motor exerts a constant torque of 
on a grindstone mounted on its shaft; the moment of
inertia of the grindstone is 
. If the
system starts from rest, find thw work done by the motor in
8.0 s and the kinetic energy at the end of this time. What
was the average power delivered y the motor?
Note: The solution for this example is given on page 270.
Problem 10-32 from page 322 in Young and Freedman
A merry-go-round starts from rest. The merry-go-round is in
the shape of a disk of radius 3.00 m, and the moment of
inertia about its rotation axis is 
.
?