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Unformatted text preview: ENES 221, Fall 2011
Homework #6
Due by: 5 pm on Wednesday, October 12, 2011 1. Angular velocity and angular acceleration of bar AB
ngular
shown in the figure are and , respectively. Dimensions of the rectangular plate are
12 in x 24 in. What is the angular velocity of the
rectangular plate? 2. The cylindrical disk shown rolls on the fixed cylindrical
surface with a constant clockwise angular velocity of 1 rad/s.
Find the accelerations of points A and B in Cartesian–vector
form. 3. Angular velocity and angular acceleration of bar AB
shown in the figure are figure are and , respectively. Find the acceleration of
point D in Cartesianvector form.
vector 4. Each of the two blocks has a mass m. The coefficient
of kinetic friction at all surfaces of contact is µ. If a
horizontal force P moves the bottom block,
determine the acceleration of the bottom block in
both cases shown. 5. Determine the acceleration of the 8kg collar A along
the bar if the coefficient of kinetic friction between the
the
collar and the bar is µk = 0.1. 6. The two 100lb blocks are released from rest. The coefficient of kinetic
lb
friction of all contacting surfaces is µk = 0.1. How long does it take
block A to fall 1 ft? ...
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This note was uploaded on 04/03/2012 for the course ENES 221 taught by Professor Kiger during the Spring '08 term at Maryland.
 Spring '08
 KIGER

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