Chapter 13, Problem 26P

The small 2-kg block A slides down the curved path and passes the lowest point B with a speed of 4 m/s. If the radius of curvature of the path at B is 1.5 m, and the coefficient of friction between the block and path is 0.3, determine (a) the normal force exerted on the block by the path at B, and (b) the rate of change of speed at this point.

The 8-kg block is moving with an initial speed of 5 m/s. If the coefficient of kinetic friction between the block and plane is μk​=0.25, determine the compression in the spring when the block momentarily stops.

2. The 10-Ib block has a speed of 4 ft's when the force of F= (8t?) Ib is applied. Determine the velocity of the block when t= 2 s. The coefficient of kinetic friction at the surface is = 0.2. v = 4 ft/s F= (8°) lb

The 100 kg crate is subjected to forces F1= 800 N and F2= 1500 kN, as shown. If it is originally at rest, determine the distance it slides in order to attain a speed of v= 6 m/s. The coefficient of kinetic friction between the crate and the surface is Muk= 0.2

The 97-N block B has a speed of v 24 m/s when it is at the location shown It slides on the incline plane. After striking spring A, it comes to a rest before it rebounds and slides back on the plane. If the coefficient of kinetic friction between the plane and the block is u 0.23, for d= 1.9 m, 0 = 17, determine the coefficient cz in the expression C+ cod- for the work done of the spring during the time interval when the block is at the initial location to where it is at rest at the lowest location, where d is the largest compressed length of the spring. (Nm](sign sensitive) V. k-2 kN/m Type your answer.

The 20-kg crate is subjected to a force having a constant direction and a magnitude F = 100 N. When s the crate is moving to the right with a speed of 8 m/s. Determine its speed when s = 25 m. The coefficient of kinetic friction between the crate and the ground is 15 m, %3D µ= 0.25 30°

The 50-kg crate is pulled by the constant force P. If the crate P starts from rest and achieves a speed of 10 m/s in 5 s, determine the magnitude of P. The coefficient of kinetic friction between the crate and the ground is µk = 0.2.

a 7.4 lb block has a speed of v-2.4 ft/s to the left when the force of F=3.6t^3 lb is applied to the right. determine the velocity and position of the block when t= 0.2 seconds. the coefficient of friction at the surface is uk= 0.2. provide both a free body diagram and a kinetic diagram. the force is being applied in the opposite direction to the velocity of the block.

The 35-kg crate is subjected to a force inclined to 70° respect to vertical plane having a constant direction and a magnitude F = 150 N. When s = 20 m, the crate is moving to the right with a speed of 10 m/s. Calculate for normal reaction and its speed when s = 30 m. The coefficient of kinetic friction between the crate and the ground is mk = 0.35.