Statics and Mechanics of Materials (5th Edition)
5th Edition
ISBN: 9780134382593
Author: Russell C. Hibbeler
Publisher: PEARSON
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Chapter 4.8, Problem 13FP
(a)
To determine
Find the frictional force (F).
(b)
To determine
Find the frictional force (F).
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The 517-N force is applied to the 95-kg block, which is stationary before the force is applied. Determine the magnitude and direction
of the friction force Fexerted by the horizontal surface on the block. The force is positive if to the right, negative if to the left.
P = 517 N
28°
H, = 0.70
H = 0.54
Answer: F- i
F4-19. Blocks A, B, and C have weights of 50 N, 25 N, and
15 N, respectively. Determine the smallest horizontal force P
that will cause impending motion. The coefficient of static
friction between A and B is u, = 0.3, between B and C,
4 = 0.4, and between block C and the ground, p" = 0.35.
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of the friction force Fexerted by the horizontal surface on the block. The force is positive if to the right, negative if to the left.
P = 515 N
22°
= 0.62
= 0.47
Answer: F-
i
Chapter 4 Solutions
Statics and Mechanics of Materials (5th Edition)
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- Incorrect The 517-N force is applied to the 95-kg block, which is stationary before the force is applied. Determine the magnitude and direction of the friction force F exerted by the horizontal surface on the block. The force is positive if to the right, negative if to the left. P = 517 N 28° 4, = 0.70 H = = 0.54 Answer: F- i 456.44 Narrow_forwardThe 499-N force is applied to the 102-kg block, which is stationary before the force is applied. Determine the magnitude and direction of the friction force Fexerted by the horizontal surface on the block. The force is positive if to the right, negative if to the left. P = 499 N 36° = 0.65 = 0.43 Answer: F = i Narrow_forwardDetermine the value of the force P which will cause motion of the 25-kg block to impend up the 34° incline. The cylinder is fixed to the block and does not rotate. The coefficients of static friction are ₁ = 0.22 and ₂ = 0.38. H1 25 kg H₂ O 34° 24°arrow_forward
- hä 30 The ladder AB Support at smooth surface at A and at rough surface at B, if the coefficient of friction between ladder and B is 0.25, determine the following 1- angle between ladder and horizontal surface , 2-reaction at A, 3-friction force at B А W=100N В 5 m 5 marrow_forwardThe 463-N force is applied to the 89-kg block, which is stationary before the force is applied. Determine the magnitude and direction of the friction force F exerted by the horizontal surface on the block. The force is positive if to the right, negative if to the left. P = 463 N 32° H = 0.60 H = 0.44 Answer: F = 276.20 is wrongarrow_forward6/5: the 1.2-kg wooden block is used for level support of the 9-kg can of paint. Determine the magnitude and direction of (a) the friction force exerted by the roof surface on the wooden block and (b) the total force exerted by the roof surface on the wooden block.Ans. (a) F=31.6 N (b) P=100.1 N up PAINT Hy= 0.90 12arrow_forward
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