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in the mechanism shown the block B is constrained to move vertically and is atta

ID: 2144028 • Letter: I

Question

in the mechanism shown the block B is constrained to move vertically and is attached to a bar BD. The point A on the bar AD is fixed. Express all your answers in the component syatem shown. At the instant shown, bar AD is rotating counterclockwise at the angular speed wAD = an rad/s, thi = 43 degrees and theta = 32 degrees. If l = 21 inches and d = 20 inches
determine the velocity of the block B at this instant.



TRIED TO UPLOAD THE DIAGRAM BUT I KEEP GETTING AN ERROR MESSAGE ON CHEGG. I REALLY NEED SOME KIND OF HELP WITH THIS PROBLEM. THANKS


Please help!


Explanation / Answer

amplitude (AD) , A = 21 inches

w = isnot given

x = A*cos(w*t) (position)

v = dx/dt

v = -A*w*sin(w*t)

at wt = 32 degrees

substitute A and w values in the above equation and find v