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A person weighs a fish on a spring scale attached to the ceiling of an elevator, as shown in Figure.

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asked 2020-11-10

A person weighs a fish on a spring scale attached to the ceiling of an elevator, as shown in Figure. Show that if the elevator accelerates, the spring scale reads an apparent weight different from the true weight of the fish.
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Answers (1)

2020-11-11
a) T-mg=ma
T=mg+ma
T=m(g+a)=weight going up=more than true weight
b)T-mg=-ma
T=mg-ma
T=m(g-a)=weight going down=less than true weight
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