A 0.78-kg block and a 0.56-kg block sits on a rotating disk. They are connecting by...

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Physics

A 0.78-kg block and a 0.56-kg block sits on a rotating disk.They are connecting by a 12-cm long string. The coefficients ofstatic and kinetic friction between the block and disk are µs =0.87 and µk = 0.63, respectively. The cart is on wheels and movesfrictionless. The distances of the block and the cart from thecenter of disk are 0.23 m and 0.35 m, respectively. The block andcart are sitting (i.e., are not moving) relative to the disk. a)The disk rotates at 33 rpm. Find the acceleration of the block andthe cart. b) Draw the appropriate free-body diagrams! 4 c) Writedown Newton’s second law for the block and the cart! d) Findmagnitudes of all forces acting both on the block and the cart! Arethese forces consistent with the fact that the block and cart aresitting (i.e., are not moving) relative to the disk?

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3.6 Ratings (473 Votes)
SOLUTIONPart aFor block the centripetalacceleration is defined asInserting data    See Answer
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