Collars A and B slide along the fixed right-angle rods and are connected by a cord of length L = 7.1 m. Determine the acceleration of collar B when y = 2.8 m if collar A is given a constant upward velocity vĄ = 2.42 m/s. The acceleration of B is positive if to the right, negative if to the left. A L B Answer: ag m/s2

Collars A andB slide along the fixed right-angle rods and are connected by a cord of length L = 6.9 m. Determine the acceleration of collar B when y = 2.3 m if collar A is given a constant upward velocity vĄ = 1.61 m/s. The acceleration of B is positive if to the right, negative if to the left. Answer: aB = i m/s2

A particle which moves with curvilinear motion has coordinates in millimeters which vary with the time t in seconds according to x = 4.5t2 - 3.8t and y = 4.1t2 - t3/3.5. Determine the magnitudes of the velocity v and acceleration a and the angles which these vectors make with the x-axis when t = 4.2 s.

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At time t = 12 s, the velocity of a particle moving in the x-y plane is v=0.08i + 2.28j m/s. By time t = 12.12 s, its velocity has become -0.08i + 2.14j m/s. Determine the magnitude day of its average acceleration during this interval and the angle 0 made by the average acceleration with the positive x-axis. The angle is measured counterclockwise from the positive x-axis. Answers: dav 0= Mi i m/s² O