1. The coefficients of static and kinetic friction between the 100 – kg block and the inclined plane are 0.30 and 0.20, respectively. Determine (a) the friction force F acting on the block when P is applied with a magnitude of 200 N to the block at rest (b) the force P required to initiate motion up the incline from rest, and (c) the friction force F acting on the block if P = 600 N 100 kg 20° Hs = 0.30 Hk = 0.20 15°

1. The coefficients of static and kinetic friction between the 100 – kg block and the inclined plane are 0.30 and 0.20, respectively. Determine (a) the friction force F acting on the block when P is applied with a magnitude of 200 N to the block at rest (b) the force P required to initiate motion up the incline from rest, and (c) the friction force F acting on the block if P = 600 N 100 kg 20° Hs = 0.30 Hk = 0.20 15°

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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Forming and Shaping

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

1. The coefficients of static and kinetic
friction between the 100 – kg block
and the inclined plane are 0.30 and
0.20, respectively. Determine (a) the
friction force F acting on the block
when P is applied with a magnitude of
200 N to the block at rest (b) the force
P required to initiate motion up the
incline from rest, and (c) the friction
force F acting on the block if P = 600N
P
100 kg
20°
Hs = 0.30
Hk = 0.20
15°

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