The two blocks shown are originally at rest. Neglecting the masses of thepulleys and the effect of friction in the pulleys and knowing that the coefficientsof friction between the blocks and the inclines are ls = 0.25 and = 0.2,determine (a) the acceleration of each block, (b) the tension in the cable.200 lb90°20°300 lbВ

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Answered: The two blocks shown are originally at…

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

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A worker slowly moves a 50-kg crate to the left alonga loading dock by applying a force P at corner asshown. Knowing that the crate starts to tip aboutedge E of the loading dock when a = 200 mm,determine the coefficient of kinetic friction betweenthe crate and the loading dock and thecorresponding magnitude P of the force.
A 4-kg collar A is at rest on a spring with stiffness k1 = 310 N/m, but the spring is not connected to the collar, when a force F of 220 N is applied to the cable. Knowing that A has a speed of 0.5 m/s when the upper spring is compressed 75 mm, determine the stiffness k2, in N/m ignore friction and pulley mass 450 mm peper 75 mm - 400 mm- F
Must solve all 3 questions. Dont solve partially. Otherwise dont attempt it.
The carnival ride from Prob 12.51 is modified so that the 80-kg riders can move up and down the inclined wall as the speed of the ride increases. Knowing that the coefficient of static friction between the wall and the platform is 0.2, determine the range of values of the constant speed v0 for which the platform will remain at h = 1.5 m.Reference to Problem 12.51:
4. A train of mass 500 t is drawn by a locomotive of mass 50 t, which exerts a tractive effort of 75 kN, while tractive resistance is 60 N/t. Determine the time and distance required to reach a velocity of 80 km/h from rest, on level track.
A uniform rod BC of mass 10 kg is connected to a collar A by a 350-mm cord AB. Neglecting the mass of the collar and cord, determine (a) the smallest constant acceleration a for which the cord and the rod will lie in a straight line, (b) the corresponding tension in the cord. Hint: The smallest constant acceleration is attained when point C of the rod is about to leave the floor. ад A 350 mm 650 mm C B 450 mm
The coefficients of friction between the block and the rail are μs=0.30 and μk =0.25. Knowing that θ=65°, determine the smallest value of P required (a) to start the block moving up the rail, (b) to keep it from moving down.
A system of blocks is pulled by a force P. The string connecting blocks A and B passes over a pulley whose coefficient of friction between string and pulley is 0.25. The coefficient of friction between surface and blocks is 0.20. Block A weighs 200N and block B weighs 300N. Determine, a. the minimum value of P for impending motion to the right. b. the tension connecting block B. B= 30° В A 30°
Please label steps clearly
A 50 Ib block A is attached to a wire that is wrapped around the shown flywheel of 30" radius and I = 12 ft-lb-s². The system is released from the rest. Neglect the effect of friction, determine (a) the acceleration of the block A, (b) the speed of the block A after it has moved 10 ft. A
Q2) A loaded Porter governor has four links each 200 mm long and are hinged at a distance of 40 mm from the axis of rotation. The mass of each ball is 2 kg and mass of the sleeve is 20 kg. The governor sleeve begins to rise at 300 r.p.m. when the links are at an angle of 35° to the vertical. Assuming the friction force to be constant, determine the minimum and maximum speed of rotation when the inc lination of the arms to the vertical is 40°.

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