Problem 15-91 of prescribed text. A 12-lb block is pushed up against a spring compressing it a distance of 6 inches. The E then released from rest and slides along the rough surface until it strikes a 4-lb sphere w suspended by a 4-ft inextensible rope. The spring has an un-stretched length of 10 incho shown and is attached to the wall, not the block. Take the coefficient of kinetic friction

Structural Analysis
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Author:KASSIMALI, Aslam.
Publisher:KASSIMALI, Aslam.
Chapter2: Loads On Structures
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Problem 15-91 of prescribed text.
A 12-lb block is pushed up against a spring compressing it a distance of 6 inches. The block is
then released from rest and slides along the rough surface until it strikes a 4-lb sphere which is
suspended by a 4-ft inextensible rope. The spring has an un-stretched length of 10 inches as
shown and is attached to the wall, not the block. Take the coefficient of kinetic friction between
the block and the surface to be u = 0.2 and the coefficient of restitution between the block and
the sphere is e
a. To what 0 will the sphere rotate
= 0.65.
before momentarily coming to rest?
b. What is the maximum tension in
the cable as the sphere rotates from
0 =0 to 0 of momentary rest?
4 ft
k-5 lb/in
10 in
in
Transcribed Image Text:Problem 15-91 of prescribed text. A 12-lb block is pushed up against a spring compressing it a distance of 6 inches. The block is then released from rest and slides along the rough surface until it strikes a 4-lb sphere which is suspended by a 4-ft inextensible rope. The spring has an un-stretched length of 10 inches as shown and is attached to the wall, not the block. Take the coefficient of kinetic friction between the block and the surface to be u = 0.2 and the coefficient of restitution between the block and the sphere is e a. To what 0 will the sphere rotate = 0.65. before momentarily coming to rest? b. What is the maximum tension in the cable as the sphere rotates from 0 =0 to 0 of momentary rest? 4 ft k-5 lb/in 10 in in
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