A wooden block of volume 1000 cc is suspended from a spring balance. It weighs 12 N in air. It is then held suspended in water with half of it inside water. What would be the reading in spring balance now?
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a
10N
b
9N
c
8N
d
7N
answer is D.
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Detailed Solution
Apparent wt.= Real wt.-Upthrust=12-121000×10-6×103×10=12-5=7 N
A wooden block of volume 1000 cc is suspended from a spring balance. It weighs 12 N in air. It is then held suspended in water with half of it inside water. What would be the reading in spring balance now?