(a) Without performing any calculations, determine whether block A will start moving up or down if the blocks are released from rest. Explain your reasoning. (b) Let TA represent the tension in the rope connecting blocks A and B, and let To represent the tension in the rope connecting blocks B and C. Someone claims that after the blocks are released from rest, these two tensions will be equal. Explain why this cannot be true. (Hint: think about the motion of block B.)
(a) Without performing any calculations, determine whether block A will start moving up or down if the blocks are released from rest. Explain your reasoning. (b) Let TA represent the tension in the rope connecting blocks A and B, and let To represent the tension in the rope connecting blocks B and C. Someone claims that after the blocks are released from rest, these two tensions will be equal. Explain why this cannot be true. (Hint: think about the motion of block B.)
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not too sure on this one, pls help! Thanks!
Transcribed Image Text:Problem 3
You and your team are performing an experiment involving tension, 3 frictionless blocks, and
2 ideal pulleys, as shown in the figure below. Each mass is as follows: mA = 2 kg, m₂ = 7kg,
and mc = 5 kg. For the questions below, make sure that you first draw a free-body diagram
for each block to help guide your thinking.
A
B
C
(a) Without performing any calculations, determine whether block A will start moving up
or down if the blocks are released from rest. Explain your reasoning.
(b) Let TA represent the tension in the rope connecting blocks A and B, and let To represent
the tension in the rope connecting blocks B and C. Someone claims that after the blocks
are released from rest, these two tensions will be equal. Explain why this cannot be
true. (Hint: think about the motion of block B.)
Transcribed Image Text:(c) If the blocks are released from rest, then what is the magnitude of the acceleration of
the blocks?
(d) What is the tension in each string after the blocks are released?
(e) Suppose that instead of being released from rest, block A is given a small, downward
initial velocity. Describe the motion of the system between this initial moment and the
time when the motion ends because one of the blocks crashes into one of the pulleys.
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