Chapter 13, Problem 100P

If the 100-kg mass has a downward velocity of 0.5 m/s as it passes through its equilibrium position, calculate the magnitude amax of its maximum acceleration. Each of the two springs has a stiffness k = 180 kN/m. Ans. amax = 30 m/s2 %3D k k 100 kg

The ice-hockey puck with a mass of 0.25 kg has a velocity of 10 m/s before being struck by the hockey stick. After the impact the puck moves in the new direction shown with a velocity of 17 m/s. If the stick is in contact with the puck for 0.06 s, compute the magnitude of the average force F exerted by the stick on the puck during contact, and find the angle ß made by F with the x-direction. 10 m/s 15% Answers: F= i B = i 17 m/s N O

The ice-hockey puck with a mass of 0.17 kg has a velocity of 11 m/s before being struck by the hockey stick. After the impact the puck moves in the new direction shown with a velocity of 20 m/s. If the stick is in contact with the puck for 0.06 s, compute the magnitude of the average force F exerted by the stick on the puck during contact, and find the angle B made by F with the x-direction. 11 m/s 16% 20 m/s

The rate of the rotating arm is 4 rad/s when it is 3 rad/s² and 0 = 180°. Determine the force it must exert on the 0.45 kg smooth cylinder if it is confined to move along the slotted path. Motion occurs in the horizontal plane. Round your answer to 2 decimal places. 6 = 4 rad/s, 0 = 3 rad/s²/ r 0 = 180° r = (²7) m

Rod OA rotates counterclockwise at a constant angular rate θ˙ = 4 rad/s. The double collar B is pin-connected together such that one collar slides over the rotating rod and the other collar slides over the circular rod described by the equation r=(1.6cosθ)m. Both collars have a mass of 0.55 kg . Motion is in the horizontal plane. Determine the magnitude of the force which the circular rod exerts on one of the collars at the instant θ = 45∘ Determine the magnitude of the force that OA exerts on the other collar at the instant θ = 45∘

The slotted arm OA rotates about a fixed axis through O. At the instant under consideration, 0 = 26°, Ò = 50 deg/s, and Ö – 14 deg/s². Determine the magnited of the force Fapplied by arm OA and the magnitude of the force N applied by the sides of the slot to the 0.3-kg slider B. Neglect all friction, and let L = 0.74 m. The motion occurs in a vertical plane. B т -L

For a short time, the 550-kg roller-coaster car with passengers is traveling along the spiral track as shown in (Figure 1) at a constant speed such that its position measured from the top of the track has components r = 10 m. 0 = (0.2t) rad, and z=(-0.3t) m. where it is in seconds. Figure r= 10 m. 1 of 1 > Part A Determine the magnitudes of the components of force which the track exerts on the car in the r, 0, and a directions at the instant t 2 s. Neglect the size of the car. Express your answers in newtons using three significant figures separated by commas. i vec Fr. Fo. F. Submit Provide Feedback VAX Request Answer N Next>

A catapult is used to throw large projectiles by the ancient civilization. If a catapult swung from rest position and shot a 10-kg projectile at a velocity of 50 meters per second. Determine the force in Newtons exerted by the catapult on the projectile.

A pilot weighs 150 lb and is traveling at a constant speed of 120 ft/s. Determine the normal force he exerts on the seat of the plane when he is upside down at A. The loop has a radius of curvature of 400 ft. IA 400 ft