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A bird cage, with a parrot inside, hangs from a scale. The parrot decides to hop to a higher perch. What can you say about the reading on the scale
(a) When the parrot jumps,
(b) When the parrot is in the air,
(c) When the parrot lands on the second perch? Assume that the scale responds rapidly so that it gives an accurate reading at all times. |
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