SATHEE: Laws Of Motion Question 239

Laws Of Motion Question 239

Question: If in a stationary lift, a man is standing with a bucket full of water, having a hole at its bottom. The rate of flow of water through this hole is $R_{0} .$ If the lift starts to move up and down with same acceleration and then that rates of flow of water are $R_{u}$ and $R_{d},$ then [UPSEAT 2003]

Options:

A) $R_{0} > R_{u} > R_{d}$

B) $R_{u} > R_{0} > R_{d}$

C) $R_{d} > R_{0} > R_{u}$

D) $R_{u} > R_{d} > R_{0}$

Show Answer

Answer:

Correct Answer: B

Solution:

Rate of flow will be more when lift will move in upward direction with some acceleration because the net downward pull will be more and vice-versa. $F_{u p w a r d} = m (g + a)$ and $F_{d o w n w a r d} = m (g - a)$

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Laws Of Motion Question 239

Question: If in a stationary lift, a man is standing with a bucket full of water, having a hole at its bottom. The rate of flow of water through this hole is R0. If the lift starts to move up and down with same acceleration and then that rates of flow of water are Ru and Rd, then [UPSEAT 2003]

Options:

Answer:

Solution:

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