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A boy of mass 50kg is standing on a weih...

A boy of mass `50kg` is standing on a weihing machine placed on the floor of a lift. The machine reads his weight in newtons. The reading of the machine if the lift is moving upwards with uniform speed of `10ms^(-1)` .

A

`510N`

B

`480N`

C

`490N`

D

`500N`

Text Solution

Verified by Experts

The correct Answer is:
C
When lift moves up or down with uniform speed The apparent weight = real weight
`W =mg` .
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