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A 135-N vertical force P is applied at A to the bracket shown, which is held by screws at B and C.
A 120-lb pilot flies a jet trainer in a half vertical loop of 3600-ft radius so that the speed of the trainer decreases at a constant rate.
A 180-lb man and a 120-lb woman stand side by side at the same end of a 300-lb boat, ready to dive, each with a 16-ft/s velocity relative to the boat
A 17.5-lb sphere A of radius 4.5 in. moving with a velocity v0 of magnitude v0 = 6 ft/s strikes a 1.6-lb sphere B of radius 2 in. which was at rest
A 160-kg utility pole is used to support at C the end of an electric wire. The tension in the wire is 540 N, and the wire forms an angle of 15°
A 16-kg triangular plate is supported by three wires as shown. Knowing that a = 150 mm, determine the tension in each wire. You must solve the given problem
A 15-kg double pulley has a radius of gyration of 125 mm and is attached to a 10-kg slider block by a pin at point G
A 2-kg block is supported by a spring of constant k = 128 N/m and a dashpot with a coefficient of viscous damping c = 0.6 N · s/m
2-kg block A slides in a vertical frictionless slot and is connected to a moving support B by means of a spring AB of constant k = 117N/m.
A 2-kg ball revolves in a horizontal circle as shown at a constant speed of 1.5 m/s.
A 1.5-kg block A rests on a 1.5-kg block B and is attached to a spring of constant 180 N/m. The coefficients of friction between the two blocks
A 10-kg uniform disk is placed in contact with an inclined surface and a constant couple M is applied as shown
A 10-kg block can be supported in the three different ways shown, knowing that the pulleys have a 100-mm radius, determine the reaction at A in each case
A 10-ton truck enters a 15° safety ramp at a high speed v0 and travels 540 ft in 5.5 s before its speed is reduced to v0/2.
A 10-lb uniform square plate is supported by two identical 3-lb uniform slender rods AD and BE. It is held in the position shown by rope CF.
A 10-lb rod of uniform cross section is used to form the shaft shown. Knowing that the shaft rotates with a constant angular velocity of magnitude 12 rad/s
A 0.2-lb model rocket is launched vertically from rest at time t = 0 with a constant thrust of 2 lb for one second and no thrust for t > 1 s.
A 1.2* 2.4 m sheet of plywood is temporarily held by nails at D and E and by two wooden braces nailed at A, B, and C.
A 10-lb block, attached to the lower end of a spring whose upper end is fixed, vibrates with a period of 6.8 s.
A 10° wedge is forced under an 80-kg cylinder as shown. Knowing that the coefficient of static friction between the cylinder and the vertical wall
A 0.7-kg sphere A and a 0.5-kg sphere C are attached to the ends of a 1-kg rod AC which can rotate in a vertical plane about an axis at B.
A 0.7-kg ball that can slide on a horizontal frictionless surface is attached to a fixed point O by means of an elastic cord of constant nt k = 150 N/m
A 0.6-lb collar A is released from rest, slides down a frictionless rod, and strikes a 1.8-lb collar B which is at rest and supported by a spring of constant 34
A 0.5-kg block B slides without friction inside a slot cut in arm OA which rotates in a vertical plane at a constant rate= 2 rad/s.
A 0.7-lb block rests on top of a 0.5-lb block supported by but not attached to a spring of constant 9 lb/ft. The upper block is suddenly removed.