1.

Two blocks of wood of masses m_(1) and m_(2) and each of specific givity 0.5 are submerged at a depth of h_(1) and h_(2) in v vessel (h_(2)gth_(1)) filled with water, which is accelerated upwards with an acceleration g/2. The difference in time taken by the blocks to reach the surface, when frleased with zero velocity is

Answer»

ZERO
`2sqrt(((h_(2)-h_(1)))/(2g))`
`sqrt(((h_(2)-h_(1)))/(G))`
`2sqrt(((h_(2)-h_(1)))/(3g))`

SOLUTION :`a_(1)=("upthrust-weight")/(m)=2g`
SIMILARLY `a_(2) = 2g`
Acceleration relative to water = 3g/2
`t_(l)=2sqrt((h_(1))/(3g))`
`t_(2)=2sqrt((h_(2))/(3g))`
`thereforet_(2)-t_(1)=2sqrt(((h_(2)-h_(1)))/(3g))`


Discussion

No Comment Found

Related InterviewSolutions