Laws of Motion: JEE Main 2021 Physics question

JEE Main 2021 · 20 Jul, Evening shift · Q65

JEE Main 202120 Jul, Evening shiftPhysicsMediumLaws of Motion70× since 2002

A body of mass 'm' is launched up on a rough inclined plane making an angle of 30

^\circ

with the horizontal. The coefficient of friction between the body and plane is

{{\sqrt x } \over 5}

if the time of ascent is half of the time of descent. The value of x is __________.

Your answerType your answer. Integers and decimals are accepted.

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JEE Main 2021 Laws of Motion Question with Answer (20 Jul Evening shift, Q65) | JEE Arc

JEE Main 2021 · 20 Jul, Evening shift · Q65

JEE Main 202120 Jul, Evening shiftPhysicsMediumLaws of Motion70× since 2002

A body of mass 'm' is launched up on a rough inclined plane making an angle of 30

^\circ

with the horizontal. The coefficient of friction between the body and plane is

{{\sqrt x } \over 5}

if the time of ascent is half of the time of descent. The value of x is __________.

Your answerType your answer. Integers and decimals are accepted.