blocks, A and B, are connected by a massless and inextensible string. Their masses are m, = 200 g and m, = 400 g. The blocks are released from rest. The pulley has negligible mass. Let S represent the system of blocks A, B, the string, and the pulley. i. Is the net force on block A always zero? Explain. ii. Is the net force on system S always zero? Explain. 400 g iii. Is the momentum of block A conserved? Explain. A 200 g

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blocks, A and B, are connected by a massless and inextensible
string. Their masses are m, = 200 g and m, = 400 g. The blocks are
released from rest. The pulley has negligible mass. Let S represent
the system of blocks A, B, the string, and the pulley.
i. Is the net force on block A always zero? Explain.
ii. Is the net force on system S always zero? Explain.
400 g
iii. Is the momentum of block A conserved? Explain.
A
200 g
Expand
Transcribed Image Text

blocks, A and B, are connected by a massless and inextensible string. Their masses are m, = 200 g and m, = 400 g. The blocks are released from rest. The pulley has negligible mass. Let S represent the system of blocks A, B, the string, and the pulley. i. Is the net force on block A always zero? Explain. ii. Is the net force on system S always zero? Explain. 400 g iii. Is the momentum of block A conserved? Explain. A 200 g

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