NEET Physics Mechanical Properties of Fluids Questions Solved

A cork is submerged in water by a spring attached to the bottom of a bowl. When the bowl is kept in an elevator moving with acceleration downwards, the length of spring
(a) Increases                                          (b) Decreases
(c) Remains unchanged                           (d) None of these

(b) Effective weight W'=m(g-a) which is less than actual weight mg, so the length of spring decreases.

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