Blocks A and B are connected by a massless string that passes overa massless, fr

Question

Blocks A and B are connected by a massless string that passes overa massless, frictionless pulley. The string pulls horizontally onBlock A (mass mA=1.80kg), which is supported by a level but roughsurface. The same string pulls vertically on Block B (massmB=0.60kg), which is supported only by the string. Block A has anacceleration of 1.1 m/s(squared) to the right. a.) The acceleration of Block B is downward. How large is it? b.) Find the upward force of the string on Block B. c.) In magnitude, the pull of the string on Block A is (less than,equal to, more than, unrelated to) the pull of the string on BlockB. d.) Find the frictional force on block A

Explanation / Answer

a) The acceleration of the system is a =aB=aA

aB= 1.1 m/s2

b) The total force FB acting or puling blockB is the difference between weigh of BWB  and resultingforce  FR

FB= WB - FR

FB= mB g - mBa = mB(g – a)

c) Thet better be equal (considering weightless and frictionlesspulley in question)

Please let me know if you have any questions.

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