A rod of negligible mass rotates in a horizontal plane about a vertical axis at point O as shown. The washer A of mass m can slide along the smooth rod and is initially held in place by a string. At the moment the string breaks, the rod has an angular velocity of 3.00 rad/s. a) Calculate the velocity of A just before it hits the String 2' stop. b) Calculate the velocity of A just after it hits the stop and sticks. c) Calculate the impulse delivered by the stop on A during the collision.

A rod of negligible mass rotates in a horizontal plane about a vertical axis at point O as shown. The washer A of mass m can slide along the smooth rod and is initially held in place by a string. At the moment the string breaks, the rod has an angular velocity of 3.00 rad/s. a) Calculate the velocity of A just before it hits the String 2' stop. b) Calculate the velocity of A just after it hits the stop and sticks. c) Calculate the impulse delivered by the stop on A during the collision.

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

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Concept explainers

Free Body Diagram

The system of forces acting on a body tends to either rotate it or make the body undergo motion. In general, when an external agent exerts a force on a body, the body undergoes translational motion and rotational motion. The body has six degrees of freedom under the influence of that force. Here, three degrees of freedom are from the translational motion while the other three are from the rotation motion. However, sometimes the bodies are not allowed to undergo any motion and are fixed, under such conditions the body is said to be constrained.

Question

2. A rod of negligible mass rotates in a horizontal
plane about a vertical axis at point O as shown.
The washer A of mass m can slide along the
smooth rod and is initially held in place by a string.
At the moment the string breaks, the rod has an
angular velocity of 3.00 rad/s.
a) Calculate the velocity of A just before it hits the
String
2'
6'
stop.
b) Calculate the velocity of A just after it hits the stop
and sticks.
c) Calculate the impulse delivered by the stop on A
during the collision.

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