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Question Number 20014 by Tinkutara last updated on 20/Aug/17

A person in lift is holding a water jar, which has a small hole at the lower end of its side. When the lift is at rest, the water jet coming out of the hole hits the floor of the lift at a distance d of 1.2 m from the person. In the following, state of the lift′s motion is given in List I and the distance where the water jet hits the floor of the lift is given in List II. Match the statements from List I with those in List II. List I P. Lift is accelerating vertically up Q. Lift is accelerating vertically down with an acceleration less than the gravitational acceleration R. Lift is moving vertically up with constant speed S. Lift is falling freely List II 1. d = 1.2 m 2. d > 1.2 m 3. d < 1.2 m 4. No water leaks out of the jar

$$\mathrm{A}\:\mathrm{person}\:\mathrm{in}\:\mathrm{lift}\:\mathrm{is}\:\mathrm{holding}\:\mathrm{a}\:\mathrm{water}\:\mathrm{jar}, \\ $$$$\mathrm{which}\:\mathrm{has}\:\mathrm{a}\:\mathrm{small}\:\mathrm{hole}\:\mathrm{at}\:\mathrm{the}\:\mathrm{lower}\:\mathrm{end} \\ $$$$\mathrm{of}\:\mathrm{its}\:\mathrm{side}.\:\mathrm{When}\:\mathrm{the}\:\mathrm{lift}\:\mathrm{is}\:\mathrm{at}\:\mathrm{rest},\:\mathrm{the} \\ $$$$\mathrm{water}\:\mathrm{jet}\:\mathrm{coming}\:\mathrm{out}\:\mathrm{of}\:\mathrm{the}\:\mathrm{hole}\:\mathrm{hits} \\ $$$$\mathrm{the}\:\mathrm{floor}\:\mathrm{of}\:\mathrm{the}\:\mathrm{lift}\:\mathrm{at}\:\mathrm{a}\:\mathrm{distance}\:{d}\:\mathrm{of} \\ $$$$\mathrm{1}.\mathrm{2}\:\mathrm{m}\:\mathrm{from}\:\mathrm{the}\:\mathrm{person}.\:\mathrm{In}\:\mathrm{the}\:\mathrm{following}, \\ $$$$\mathrm{state}\:\mathrm{of}\:\mathrm{the}\:\mathrm{lift}'\mathrm{s}\:\mathrm{motion}\:\mathrm{is}\:\mathrm{given}\:\mathrm{in}\:\mathrm{List} \\ $$$$\mathrm{I}\:\mathrm{and}\:\mathrm{the}\:\mathrm{distance}\:\mathrm{where}\:\mathrm{the}\:\mathrm{water}\:\mathrm{jet} \\ $$$$\mathrm{hits}\:\mathrm{the}\:\mathrm{floor}\:\mathrm{of}\:\mathrm{the}\:\mathrm{lift}\:\mathrm{is}\:\mathrm{given}\:\mathrm{in}\:\mathrm{List} \\ $$$$\mathrm{II}.\:\mathrm{Match}\:\mathrm{the}\:\mathrm{statements}\:\mathrm{from}\:\mathrm{List}\:\mathrm{I} \\ $$$$\mathrm{with}\:\mathrm{those}\:\mathrm{in}\:\mathrm{List}\:\mathrm{II}. \\ $$$$\boldsymbol{\mathrm{List}}\:\boldsymbol{\mathrm{I}} \\ $$$$\boldsymbol{\mathrm{P}}.\:\mathrm{Lift}\:\mathrm{is}\:\mathrm{accelerating}\:\mathrm{vertically}\:\mathrm{up} \\ $$$$\boldsymbol{\mathrm{Q}}.\:\mathrm{Lift}\:\mathrm{is}\:\mathrm{accelerating}\:\mathrm{vertically}\:\mathrm{down} \\ $$$$\mathrm{with}\:\mathrm{an}\:\mathrm{acceleration}\:\mathrm{less}\:\mathrm{than}\:\mathrm{the} \\ $$$$\mathrm{gravitational}\:\mathrm{acceleration} \\ $$$$\boldsymbol{\mathrm{R}}.\:\mathrm{Lift}\:\mathrm{is}\:\mathrm{moving}\:\mathrm{vertically}\:\mathrm{up}\:\mathrm{with} \\ $$$$\mathrm{constant}\:\mathrm{speed} \\ $$$$\boldsymbol{\mathrm{S}}.\:\mathrm{Lift}\:\mathrm{is}\:\mathrm{falling}\:\mathrm{freely} \\ $$$$\boldsymbol{\mathrm{List}}\:\boldsymbol{\mathrm{II}} \\ $$$$\mathrm{1}.\:{d}\:=\:\mathrm{1}.\mathrm{2}\:\mathrm{m} \\ $$$$\mathrm{2}.\:{d}\:>\:\mathrm{1}.\mathrm{2}\:\mathrm{m} \\ $$$$\mathrm{3}.\:{d}\:<\:\mathrm{1}.\mathrm{2}\:\mathrm{m} \\ $$$$\mathrm{4}.\:\mathrm{No}\:\mathrm{water}\:\mathrm{leaks}\:\mathrm{out}\:\mathrm{of}\:\mathrm{the}\:\mathrm{jar} \\ $$

Commented by Tinkutara last updated on 26/Aug/17

help pls

$$\mathrm{help}\:\mathrm{pls} \\ $$

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