The initially stationary 12-kg block is subjected to the time-varying force whose magnitude Pis shown in the plot. The 40° angle remains constant. Determine the block speed at (a) t = 1.7 s and (b) t = 5.8 s. _102 12 kg 40 SHi=0.51 (He = 0.43 6.6

The initially stationary 12-kg block is subjected to the time-varying force whose magnitude Pis shown in the plot. The 40° angle remains constant. Determine the block speed at (a) t = 1.7 s and (b) t = 5.8 s. _102 12 kg 40 SHi=0.51 (He = 0.43 6.6

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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Metal forming is a category of metalworking process through which the material can be given the desired shape and size by subjecting it to plastic deformation, where the component undergoes bulk deformation process upon application of loads. Unlike the shearing and machining process, the material does not undergo up to a failure point as indicated in the stress-strain curve. Hence, the stresses induced during the forming process are greater than yield strength but less than the failure strength of the material. The process does not lead to the loss of material, so it can be said to be an economical process. During forming, the material is subjected to tensile forces, compressive forces, bending, and shearing loading conditions. The material should possess the property of ductility to undergo the forming process.

Question

The initially stationary 12-kg block is subjected to the time-varying force whose magnitude Pis shown in the plot. The 40° angle
remains constant. Determine the block speed at (a) t = 1.7 s and (b) t = 5.8 s.
102
12 kg
40
SHo=0.51
HA = 0.43
6.6
Answers:
(a) At t = 1.7 s, v= i
m/s
(b) At t= 5.8 s, v=
m/s

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