1. A record and turntable are rotating without friction at 0.6 revolutions per second. A piece of putty is dropped onto the edge of the record, where it sticks. What is the angular speed of the turntable after the putty sticks? The mass of the putty is 0.100 kg and the mass of the record and turntable combined is 0.500 kg. Assume there is no motor attached to the turntable. a. Draw a before and after diagram. Label with variables only. b. Derive an equation with variables before inserting numbers. putty axis of rotation 30 cm

1. A record and turntable are rotating without friction at 0.6 revolutions per second. A piece of putty is dropped onto the edge of the record, where it sticks. What is the angular speed of the turntable after the putty sticks? The mass of the putty is 0.100 kg and the mass of the record and turntable combined is 0.500 kg. Assume there is no motor attached to the turntable. a. Draw a before and after diagram. Label with variables only. b. Derive an equation with variables before inserting numbers. putty axis of rotation 30 cm

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter1: Units, Trigonometry. And Vectors

Section: Chapter Questions

Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...

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Concept explainers

Angular speed, acceleration and displacement

Angular acceleration is defined as the rate of change in angular velocity with respect to time. It has both magnitude and direction. So, it is a vector quantity.

Angular Position

Before diving into angular position, one should understand the basics of position and its importance along with usage in day-to-day life. When one talks of position, it’s always relative with respect to some other object. For example, position of earth with respect to sun, position of school with respect to house, etc. Angular position is the rotational analogue of linear position.

Question

Show work on a solution sheet. Equations for moments of inertia are given below.
1. A record and turntable are rotating without friction at 0.6 revolutions per second.A piece
of putty is dropped onto the edge of the record, where it sticks. What is the angular
speed of the tuntable after the putty sticks? The mass of the putty is 0.100 kg and the
mass of the record and turntable combined is 0.500 kg. Assume there is no motor
attached to the turntable.
a. Draw a before and after diagram. Label with variables only.
b. Derive an equation with variables before inserting numbers.
axis of
rotation
putty
30 cm
2. A system consists of a mass M2 and a uniform rod of mass M1 and length L. The rod is
initially rotating with an angular speed w on a horizontal frictionless table about a
vertical axis fixed at one end through point P. The moment of inertia of the rod about P
is / =ML. The rod strikes the stationary mass M2. As a result of this collision, the
rod is stopped and the mass M2 moves away with a speed of v. Using angular
momentum conservation determine the speed v in terms of M1, M2, L, and w.
%3!
M2
M2

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