1.) A 300-lb block rests on a plane inclined at 36.87° from the horizontal. A 100 lb force pushes this block up the plane. The coefficient of friction between the block and the plane shown is 0.35. If the block is in equilibrium, determine the magnitude of the friction force. a. 63 lb b. 280 lb c. 80 lb d. 84 lb
1.) A 300-lb block rests on a plane inclined at 36.87° from the horizontal. A 100 lb force pushes this block up the plane. The coefficient of friction between the block and the plane shown is 0.35. If the block is in equilibrium, determine the magnitude of the friction force. a. 63 lb b. 280 lb c. 80 lb d. 84 lb
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 7.50P: The block of weight W is pulled by the force P inclined at the angle to the horizontal. Find the...
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1.) A 300-lb block rests on a plane inclined at 36.87° from the horizontal. A 100 lb force pushes this block up the plane. The coefficient of friction between the block and the plane shown is 0.35. If the block is in equilibrium, determine the magnitude of the friction force.
a. 63 lb
b. 280 lb
c. 80 lb
d. 84 lb
2.) Find the component of F = 5 Ni + 3 Nj + 2 Nk along the vector r = 3 mi − 4 mj.
a. Fr = 5.4 N
b. Fr = 4.4 N
c. Fr = 6.4 N
d. Fr = 5.14 N
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