A box (40 kg) is attached to a heavy pulley (with mass 8 kg and radius of 20 cm, treat it as a solid /////////!!! disk). Initially the box is hung 6 meters above the ground. 28. find the velocity of the box when it strikes the ground. Ull a. 11 m/sec b. 10 m/sec c. 9 m/sec d. 8 m/sec 29. find the tension on the string. a. 78.4 N c. 35.6 N b. 392 N d. 178 N a Mg m I 6m

University Physics Volume 1
18th Edition
ISBN:9781938168277
Author:William Moebs, Samuel J. Ling, Jeff Sanny
Publisher:William Moebs, Samuel J. Ling, Jeff Sanny
Chapter10: Fixed-axis Rotation
Section: Chapter Questions
Problem 121CP: The angular acceleration of a rotating rigid body is given by =(2.0-3.0t)rad/s2 . If the body starts...
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A box (40 kg) is attached to a heavy pulley (with mass 8 kg and radius of 20 cm, treat it as a solid
www.G
disk). Initially the box is hung 6 meters above the ground.
28. find the velocity of the box when it strikes the ground.
a. 11 m/sec
b. 10 m/sec
c. 9 m/sec
d. 8 m/sec
29. find the tension on the string.
a. 78.4 N
c. 35.6 N
b. 392 N
d. 178 N
30. find the angular acceleration of the pulley.
a. 44.5 rad/s²
b. 49 rad/s²
c. 38 rad/s²
a
T
Mg
سر
d. 53 rad/s²
TH
m
T
6m
Transcribed Image Text:A box (40 kg) is attached to a heavy pulley (with mass 8 kg and radius of 20 cm, treat it as a solid www.G disk). Initially the box is hung 6 meters above the ground. 28. find the velocity of the box when it strikes the ground. a. 11 m/sec b. 10 m/sec c. 9 m/sec d. 8 m/sec 29. find the tension on the string. a. 78.4 N c. 35.6 N b. 392 N d. 178 N 30. find the angular acceleration of the pulley. a. 44.5 rad/s² b. 49 rad/s² c. 38 rad/s² a T Mg سر d. 53 rad/s² TH m T 6m
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