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Exam Problem
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90% give the
correct answer
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the normal force
on the ball is equal to the downward force
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due to gravity
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FCI 18
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54% choose the
correct answer:
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the upward force
on the elevator by the cables
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equals the
downward force due to gravity
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36% choose a
common misconception:
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the upward force
on the elevator by the cables
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is greater than
the downward force due to gravity
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