Answered: Experiment 2 Fulcrum Position → (m)…

Glencoe Physics: Principles and Problems, Student Edition

1st Edition

ISBN:9780078807213

Author:Paul W. Zitzewitz

Publisher:Paul W. Zitzewitz

Chapter6: Motion In Two Dimensions

Section6.3: Relative Velocity

Problem 27PP

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Question

University Physics 1 - Rotation, Angular momentum, and Torque

I need help with this problem and an explanation of the solutions described below:

- A torque meter stick experiment

For experiment 2 (The image of the data below), suppose we remove M3 but keep everything else the same. The system will be unbalanced and will begin to rotate. For this problem, treat the meter stick as being rotated about its ideal center of mass of XCM = 50 cm.

a) Calculate the moment of inertia of the system (meter stick and hanging masses).

b) Calculate the angular acceleration of the system.

Experiment 2
Fulcrum Position →
(m)
0.4999 m
Distance to
Mass
Position
Object
Fulcrum
Diagram 2
Diagram
N
(kg)
0.48m
(m)
(m)
THE
M1
0.1179 kg
0.25 m
0.2499 m
-
M2
0.2179 kg
0.75 m
0.2501 m
mig (29) ↑
fulcrum
M3
0.0679 kg 0.0198 m
m39
0.4801 m

Definition Definition Rate of change of angular velocity. Angular acceleration indicates how fast the angular velocity changes over time. It is a vector quantity and has both magnitude and direction. Magnitude is represented by the length of the vector and direction is represented by the right-hand thumb rule. An angular acceleration vector will be always perpendicular to the plane of rotation. Angular acceleration is generally denoted by the Greek letter α and its SI unit is rad/s 2 .

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