The 25-kg block A rests on the 60-kg plate B as shown in (Figure 1).FigureB30°0.5 mHAB=0.2MBC = 0.11 of 1Part ANeglecting the mass of the rope and pulley, and using the coefficients of kinetic friction indicated, determine the time needed for block A to slide 0.5 m on the plate when the system is released from rest.Express your answer to three significant figures and include the appropriate units.UIt = 2.52SubmitμAS?Previous Answers Request AnswerX Incorrect; Try Again; 5 attempts remaining< Return to Assignment Provide Feedback

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Answered: 2.52 S Submit Previous Answers Request…

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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 7.63P: The leather rein used to fasten the horse to the hitching rail weighs 3.5 oz per foot. The...

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Two identical chairs, each weighing 14 lb, are stacked as shown. The center of gravity of each chair is denoted by G. The coefficient of static friction is 0.2 at B (the contact point between the chairs) and 0.35 at A, C, and D. Determine the smallest force P that would cause sliding.
The leather rein used to fasten the horse to the hitching rail weighs 3.5 oz per foot. The coefficient of static friction between the rail and the rein is 0.6. If a 34-lb force acting on the bridle is sufficient to restrain the horse, determine the smallest safe length L for the free end of the rein.
Find the smallest distance d for which the hook will remain at rest when acted on by the force P. Neglect the weight of the hook, and assume that the vertical wall is frictionless.
The square-threaded screw with a pitch of 10 mm and a mean radius of 18 mm drives a gear that has a mean radius of 75 mm. The static and kinetic coefficients of friction between the gear and the screw are 0.12 and 0.06, respectively. The input torque applied to the screw is C0=10Nm. Assuming constant speed operation, determine the output torque C1 acting on the gear.
The 600-lb cable spool is placed on a frictionless spindle that has been driven into the ground. If the force required to start the spool rotating is F = 160 lb, determine the coefficient of friction between the ground and the spool. Neglect the diameter of the spindle compared to the diameter of the spool.
The 25-kg block A rests on the 65-kg plate B as shown in (Figure 1). Figure 0.5 m PAB-02 Pac= 0.1 Part A Neglecting the mass of the rope and pulley, and using the coefficients of kinetic friction indicated, determine the time needed for block A to slide 0.5 m on the plate when the system is released from rest. Express your answer three significant figures and include the appropriate units. t= Value Submit CIE Units < Return to Assignment Previous Answers Request Answer ? X Incorrect; Try Again; 5 attempts remaining Provide Feedback
Part A The 10-kg block A rests on the 35-kg plate B. (Figure 1) Neglecting the mass of the rope and pulley, and using the coefficients of kinetic friction indicated, determine the time needed for block A to slide 0.5 m on the plate when the system is released from rest. Express your answer to three significant figures and include the appropriate units. HA ? t = Value Units Submit Request Answer Provide Feedback Next > Figure < 1 of 1 0.5 m HAR = 0.2 - B LBC = 0.1
1. Assuming F is 90lb, coefficient of static friction 48 =0.2, and the coefficient of kinetic friction uk-0.16. Determine the distance the 100 lb crate moves in 2 seconds. F 30° 2.The crate shown in the figure has a mass of 120 kg., coefficient of static friction HS=0.6, and the coefficient of kinetic friction uk=0.5. Determine the tension in which the winch must exert on the cable to start the crate to slide up. Hint: the coefficient of static friction is used to determine the maximum friction force the surface can support.
incline and released from rest. The coefficient of static friction between the block and the incline is 0.30. (a) Determine the maximum and minimum values of the initial tension T in the spring for which the block will not slip when released . (b) Calculate the friction force F on the block of T = 40 lb. www 100 lb WWW H =0.30 30°
The block has a mass of 140 kg and rests on a surface for which the coefficients of static and kinetic friction are Hs = 0.5 and uj. = 0.4, respectively. (Figure 1) Part A If a force F = (60t2 ) N, where t is in seconds, is applied to the cable, determine the power developed by the force when t = 5 s. Hint: First determine the time needed for the force to cause motion. Express your answer to three significant figures and include the appropriate units. µA ? P = Value Units Figure 1 of 1 Submit Request Answer Provide Feedback Next >
A 60-kg cabinet is mounted on casters that can be locked to prevent their rotation. The coefficient of static friction between the floor and each caster is 0.35. 3. If h = 600 mm, determine the magnitude of the force P (in N) required to move the cabinet to the right if the casters at A are locked and the casters at B are free to rotate. (ANSWER: 72.5)
Determine the distance s that the 90 kg draftsman can climb without causing the 4-meter ladder to slip at its lower end A. The top of the ladder weighing 15 kg has a small pulley, and on the ground the coefficient of static friction is 0.25. The painter's center is directly above her feet. Answer. S 2.55 m% 3d by 4 m by 1.5 m