7. A 400KN block is resting on a rough horizontal surface for which the coefficient of friction is 0.40. Determine the force P required to cause motion to impend if applied to the block 30° with the Horizontal. A. 225KN B. 230KN C. 235KN D. 240KN
7. A 400KN block is resting on a rough horizontal surface for which the coefficient of friction is 0.40. Determine the force P required to cause motion to impend if applied to the block 30° with the Horizontal. A. 225KN B. 230KN C. 235KN D. 240KN
College Physics
11th Edition
ISBN:9781305952300
Author:Raymond A. Serway, Chris Vuille
Publisher:Raymond A. Serway, Chris Vuille
Chapter1: Units, Trigonometry. And Vectors
Section: Chapter Questions
Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...
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Transcribed Image Text:7. A 400KN block is resting on a rough horizontal surface for which the
coefficient of friction is 0.40. Determine the force P required to cause motion to
impend if applied to the block 30° with the Horizontal.
A. 225KN
В. 23ОKN
C. 235KN
D. 240KN
8. A 400KN block is resting on a rough horizontal surface for which the
coefficient of friction is 0.40. What minimum force is required to start motion?
А. 138.5KN
В. 148.5KN
C. 158.5KN
D. 168.5KN

Transcribed Image Text:For question no. 9, 10, and 11 refer to the figure below.
|500
45
9. The 500KN is in contact with a 45° inline. The coefficient of static friction is
0.25. Compute the value of the horizontal force P necessary to Just start the
block up the incline.
A. 822KN
В. 832KN
C. 842KN
D. 852KN
10. The 500KN is in contact with a 45° inline. The coefficient of static friction is
0.25. Compute the value of the horizontal force P necessary to Just prevent
motion down the incline.
A. 100KN
B. 200KN
C. 300KN
D. 400KN
11. The 500KN is in contact with a 45° inline. The coefficient of static friction is
0.25. If P=400, What is the amount and direction of the friction force.
А. 340KN
B.440KN
C. 540KN
D. 640KN
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