Chapter 13, Problem 95P

Slider B moves only vertically (the y-direction). Find the acceleration (positive if up, negative if down). B m y Answer: a, = i m/s2 %3D

M = A frisbee is thrown such that its final angular velocity is w = 9 after being in flight for t = 2 s. As it rad S flies, the wind applies a constant moment, causing the frisbee to rotate faster. If the frisbee was initially at rest, determine the moment of the wind and the work done by said moment. Assume the frisbee can be modelled as a disk with mass m = = 0.15 kg and that it rotates about its center of gravity G. The frisbee has a radius of r = 0.12 m. UM = N.m r J G M

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 rod of the fixed hydraulic cylinder is moving to the left with a speed of 94 mm/s and this speed is momentarily increasing at a rate of 440 mm/s each second at the instant when SA = 355 mm. Determine the tension in the cord at that instant. The mass of slider Bis 0.77 kg, the length of the cord is 950 mm, and the effects of the radius and friction of the small pulley at A are negligible. Find results for cases (a) negligible friction at slider B and (b) p = 0.42 at slider B. The action is in a vertical plane. 220 mm Answers: 0.77 kg B (a) Negligible friction: T= i (b) Uk=0.42: T= i N N

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∘

Solve it correctly please. I

Please do it fast

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 weight of the spring held follower AB is 0.381 kg and moves back and forth as its end rolls on the contoured surface of the cam, where r = 0.2 ft and z = (0.1sin20) ft. If the cam is rotating at a constant rate of 6 rad/s, determine the force, in Ib, at the end A of the follower where e = 45°. In this position, the spring is compressed 0.4 ft. Neglect friction at the bearing C. Round your answer to 3 decimal places. z = 0.1 sin 20 0.2 ft e = 6 rad/s A k = 12 lb/ft