Physics for Scientists and Engineers
6th Edition
ISBN: 9781429281843
Author: Tipler
Publisher: MAC HIGHER
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Chapter 9, Problem 73P
To determine
To Find: The angle of inclination.
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The figure shows a rigid assembly of a thin hoop (of mass m = 0.30 kg and radius R = 0.17 m) and a thin radial rod (of length L = 2R and
also of mass m = 0.30 kg). The assembly is upright, but we nudge it so that it rotates around a horizontal axis in the plane of the rod and
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hoop, through the lower end of the rod. Assuming that the energy given to the assembly in the nudge is negligible, what is the
assembly's angular speed about the rotation axis when it passes through the upside-down (inverted) orientation?
Hoop
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Rotation
axis
Number
9.23
Units
rad/s
A porter governor, its central load is 18 kg and the weight of each ball is 2 kg. The top arms are 25 cm while the bottom arms are each 30 cm long and all arms pivoted on the axis of rotation. The friction of the sleeve is 14 N. If the top arms make 45 ° with the axis of rotation in equilibrium position, find the speed of the governor at that position.
A uniform bar of mass M and length L is suspended on a frictionless hinge. A horizontally launched blob of clay of mass m strikes the bottom end of the bar and gets stuck to it. After that, the bar swings upward. What is the minimum speed v of the blob of clay before impact that would enable the rod to swing full circle?
Chapter 9 Solutions
Physics for Scientists and Engineers
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