Question 1
A heavy weight is supported by two cables that exert tensions of magnitude
T1 and
T2. Which statement is correct?
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T1 = T2.
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T1y = T2y.
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T1>T2.
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T1<T2.
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We need the mass of the box in order to determine the correct answer.
Question 2
A juggler throws two balls up to the same height so that they pass each other halfway up when A is rising and B is descending. Ignore air resistance and buoyant forces. Which statement is true of the two balls at that point?
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There is an residual upward force from the hand on each ball.
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There is a greater residual force from the hand on A than there is on B.
◦
Only gravity acts on B but there is an additional residual force from the hand on A.
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There is an additional downwards force besides gravity on each ball.
◦
The only force acting on each ball is the gravitational force.
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