1) Block C is attached to a rope wrapped around belt B. The block starts from re

Question

1) Block C is attached to a rope wrapped around belt B. The block starts from rest and after falling 50 cm has a velocity of 0.5 m/s. The rope unravels with no slip and causes belt B and C to rotate. Block C falls with a constant acceleration. For the instant shown, find the angular velocity of belt B and A. 0.5 m 50 cm V0.5 2) A record is spinning at v -1.3 m/s where the needle is locat ed. Find the angular speed of the record when the first song plays at 250mm, and when the final song ends at r,-100mm. If the length of the album is t-35 minutes, and a is constant, how many revolutions does the record make? Tr

Explanation / Answer

1] Acceleration of block C, a = v^2/2s = 0.5^2/(2*0.50) = 0.25 m/s^2

angular acceleration of B = 0.25/5 = 0.05 rad/s^2

angular acceleration of C = 0.05*0.5/2 = 0.0125 rad/s^2

Sorry, We are supposed to do only one question.

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