The initially stationary 10-kg block is subjected to the time-varying force whose magnitude P is shown in the plot. The 36° angle remains constant. Determine the block speed at (a) t = 3.2 s and (b) t = 7.1 s.

The initially stationary 10-kg block is subjected to the time-varying force whose magnitude P is shown in the plot. The 36° angle remains constant. Determine the block speed at (a) t = 3.2 s and (b) t = 7.1 s.

International Edition---engineering Mechanics: Statics, 4th Edition

4th Edition

ISBN:9781305501607

Author:Andrew Pytel And Jaan Kiusalaas

Publisher:Andrew Pytel And Jaan Kiusalaas

Chapter7: Dry Friction

Section: Chapter Questions

Problem 7.79P: The coefficient of rolling resistance between the 30-kg lawn roller and the ground is r=0.1. (a)...

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Question

The initially stationary 10-kg block is subjected to the time-varying force whose magnitude Pis shown in the plot. The 36° angle
remains constant. Determine the block speed at (a) t = 3.2 s and (b) t = 7.1 s.
76
10 kg
36
SH=0.42
M = 0.35
9.9
Answers:
(a) Att = 3.2 s, v=
i
m/s
(b) At t = 7.1 s, v=
i
m/s
N

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