The 100-lb boy at A is suspended from the rope that passes over the quarter circular cliff rock. What force must the woman exert on the rope in order to let the boy descend at constant velocity? The coefficients of static and kinetic friction between the rope and the rock are Ms = 0.4 and μk = 0.35, respectively.

Block A has a mass of 10 kg and bloc B has a mass of 2 Kg and are kept at rest. The 2 blocs are comected by a cord passing by a wheel at the top of the incline. The surface of the incline has a friction coefficient -0.12. The angle of the incline is 0= 30°. A is at 6 meters above the incline floor. After being released from rest, the bloc A will move down. Determine the total energy of the bloc A after it has moved down the incline by 4 meters.. Calculate its velocity. 6 m B

The 498-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. H₂ = 0.66 Hk = 0.52 36° P = 498 N

Two blocks A and B have a weight of 11 lb and 6 lb , respectively. They are resting on the incline for which the coefficients of static friction are μA = 0.16 and μB = 0.23. Determine the angle θ which will cause motion of one of the blocks. What is the friction force under each of the blocks when this occurs? The spring has a stiffness of k = 2 lb/ft and is originally unstretched. Determine the smallest angle θ which will cause motion of one of the blocks. Determine is the friction force under the block A at this angle. Determine is the friction force under the block B at this angle.

The 2-kg spool S fits loosely on the inclined rod for which the coefficient of static friction is μ = 0.28. (a)  If the spool is located 0.25 m from A, determine the maximum constant speed the spool can have so that it does not slip up the rod. Express your answer to three significant figures and include the appropriate units.

Please give a detailed solution asap. Handwritten answer,no gpt.

Block A has a mass of 26 kg and block B has a mass of 43 kg. The two blocks are stacked on the ramp with an incline of 0 = 33°. Determine the largest horizontal force F that can be applied to block B without either block moving for each of the following two cases: a.) The friction coefficient for the contact between blocks A and B is Ha1 = 0.62 and the friction coefficient for the contact between block A and the ramp is H2 = 0.26. b.) The friction coefficient for the contact between blocks A and B is Ha1 = 0.62 and the friction coefficient for the contact between block A and the ramp is H2 = 0.65. F В A Part a) The limiting slip condition occurs at the contact betveen A and the ramp ♥ N The maximum force before either block A or B slips is Part b) The limiting slip condition occurs at the contact between A and B N. The maximum force before either block A or B slips is

The coefficient of friction between all surfaces is us = 0.4 and μK = 0.3. The mass of A is 11 kg and the mass of B is 36 kg. Assume the pulley is mass less and frictionless. Determine the smallest force P required to keep the system moving. P A A B

The force Pis applied to the 52-kg block when it is at rest. Determine the magnitude and direction of the friction force exerted by the surface on the block if (a) P = 0, (b) P = 184 N, and (c) P = 245 N. (d) What value of P is required to initiate motion up the incline? The static and kinetic coefficients of friction between the block and the incline are ug = 0.20 and µ = 0.16, respectively. The friction force is positive if up the incline, negative if down the incline. 52 kg 21° H, = 0.20 H = 0.16 13 Answers: (a) F= i N (b) F = i N (c) F= i N (d) P= i N

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