First slide

Fluid statics

Question

A hydrogen balloon released on the moon would:

Very Easy

A

climb up with an acceleration of 9.8 m/sec²
B

climb up with an acceleration of 9.8 x 6 m/sec²
C

neither climb nor fall
D

fall with an acceleration of (9 .8/6) m/sec²

Solution

Upthrust force = volume ×density×g On moon surface g is decrease that is one sixth of the g on earth surface so upthrust force decrease there fore balloon on moon surface falls with an acceleration g/6 so option 4 is correct

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