Chapter 13, Problem 68P

The block of weight 8 Ib is released from rest at A and slides down the smooth circular surface AB. It then continues to slide along the horizontal rough surface until it strikes the spring. Determine how far (ft) it compresses the spring before stopping. (uk = 0.2, a= 4 ft,6 = 90 deg, b = 2 ft, k = 40 lb/ ft)

The 2 kg ring is at the rest at point A as shown in the figure. If it is released through the circular rod what will be the highest amount of compression of the spring. Assume there is no friction. Consider the stiffness of the spring as k = 21 kN/m.

F13-3. A spring of stiffness k = 500 N/m is mounted against the 10-kg block. If the block is subjected to the force of F = 500 N, determine its velocity at s = 0.5 m. When s = 0, the block is at rest and the spring is uncompressed. The contact surface is smooth. F = 500 N k = 500 N/m wwww

The horizontal force P = 325 N. Determine the normal reaction forces at A and B. The mass of the cylinder is m = 9 kg and that of the cart is M = 31 kg. Neglect all friction. P 56° A m B 56° M

The 20-kg block A rests on the 2-kg pan B. Both are supported by a spring having a stiffness k of 3 N/m that is attached to the bottom of the pan and to the ground. Determine the distance d the pan should be pushed down from the equilibrium position and then released from rest so that separation of the block will take place from the surface of the pan at the instant the spring becomes unstretched. Please show complete solution with FBD.

The 50-1b block rests on the smooth surface. A force F = (40+s) Ib, which s isin ft, acts on the block in the direction shown. If the spring is originally unstretched (s = 0) and the block is at rest, determine the power developed by the force the instant theblock has moved s = 1.5 ft.F30°k = 20 lb/ft

The collar with mass of 0.9 kg is released from rest at position A and travels down the smooth circular rod in the vertical plane. The spring has a stiffness of k = 145 N and an unstretched length of 0.5 meters. Consider R = 2.0 meters, 0 = 23°, and g = 10 m. Determine the work done by the weight of the collar (in Joules) during the motion from point A to point C. A m R/2 D В C

If the track is designed so that the passengers of the roller coaster do not experience a normal force less than 1/2 or more than 3 times their weight, determine the limiting heights hA and hC so that this does not occur. The roller coaster starts from rest at position A. Neglect friction. Please show every single step of the process

The 50 kg block is released from rest at A. Determine the compression of each of the springs after the block strikes the platform and is brought momentarily to rest. Initially both springs are unstretched. Assume the platform has a negligible mass. 2 m 10 cm k = 60 N/cm k = 90 N/cm