Chapter 15, Problem 42P

The 5 kg mass at point A is at rest on the spring with k = 300 N/m when t=0s. At this instant, 150 N force is applied to the cable. What is the velocity of mass when it has risen 0.3 m?

The spring in the toy gun has an undeformed length of 110.1 mm. It compresses and stops at the position shown. When the trigger is pulled, the spring decompresses 8.3 mm, and the 16.4-g ball moves down the barrel. Determine the speed in m/s of the ball as it leaves the gun. Neglect friction. k = 2 kN/m 50 mm D -150 mm B

The 10-lb block A travels to the right at va = 2.7ft/s at the instant shown. If the coefficient of kinetic friction is o.2 between the surface and A, determine the weight of block B that will give block A a final velocity of 6.8 ft/s when it has moved 4 ft. B

The 50-kg block at A is mounted on rollers so that it moves along the fixed horizontal rail with negligible friction under the action of the constant 300-N force in the cable.  The block is released from rest at A, with the spring to which it is attached extended an initial amount x1 = 0.233 m.  The spring has a stiffness k = 80 N/m.  Calculate the velocity v of the block as it reaches position B.

The 2-kg block B and 15-kg cylinder A are connected to a light cord that passes through a hole in the center of the smooth table. If the block is given a speed of v = 10 m/s, determine the radius r of the circular path along which it travels.

The 4,450kg truck is traveling at 30.50m/s when the brakes on all its wheels are applied, causing it to skid for a distance of 22m before coming to rest. Calculate the constant horizontal force developed in the coupling C, as well as the frictional force developed between the tires of the truck and the road during this time. The combined mass of the boat and trailer is 2,250kg

Block A has a mass of 2 kg and slides into an OPEN-ENDED box B with a velocity of 2 m/s. If the boxB has a mass of 3 kg and rests on top of a plate P that has a mass of 3 kg, determine the distancethe plate moves after it stops sliding on the floor. Also how long in seconds is it after impact before allmotion ceases? The coefficient of kinetic friction between the box and the plate is μk=0.2, andbetween the plate and the floor μ'k=0.2. Also, the coefficient of static friction between the plateand the floor is μ's = 0.5

The spring of constant k = 120 N/m is unstretched when the slider of mass m = 1.6 kg passes position B. If the slider is released fre rest in position A, determine its speed as it passes points B and C. What is the normal force exerted by the guide on the slider at position C? Neglect friction between the mass and the circular guide, which lies in a vertical plane. The distance R = 0.95 m. m B Answers Vg = m/s Vc= i m/s Nc=

Q17. As shown in the image below, the 0.5-kg ball strikes the rough ground and rebounds. The directions of its velocities before and after the strike are shown. If the speeds are vi = 21 m/s and v2 = 13 m/s, determine the magnitude of the impulse (in N-s) the ground exerts on the ball. Assume that the ball does not slip when it strikes the ground, and neglect the size of the ball and the impulse produced by the weight of the ball. Please pay attention: the numbers may change since they are randomized. Your answer must include 2 places after the decimal point. V2 V1 45° 30° Your Answer: Answer