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EF 152 – Physics for Engineers
Spring, 2009
Recitation 1.5
Review Problems
1.
Find the torque (moment) about point B.
2.
A carousel initially at rest has an angular acceleration
of 0.4 rad/s
2
and accelerates for 5 s. It then rotates at a
constant angular velocity for 30 s before slowing down at
the same rate with which it accelerated.
The carousel
eventually comes to a stop.
How far does a rider sitting on
horse 3 m from the center travel during the ride?
3.
A bicycle wheel has an angular velocity of 4.5 rad/sec.
14 seconds later, the bicycle wheel has an angular
velocity of 7.8 rad/sec.
Assuming constant angular acceleration, how many revolutions did the bicycle make in
the 14 seconds?
4.
A wooden salad bowl can be approximated as follows.
The sides can be approximated
as a hollow cylinder with an outside radius of 150 mm, an inside radius of 120 mm, a
height of 100 mm, and a mass of 1.8 kg.
The bottom can be approximated as a disc that
fits inside the cylinder with a thickness of 25 mm and a mass of 0.8 kg.
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This note was uploaded on 04/07/2009 for the course EF 152 taught by Professor Ab during the Spring '08 term at University of Tennessee.
 Spring '08
 AB

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