JEE Main 2016 — Laws Of Motion Question with Solution
From: JEE Main 2016 (Online) 9th April Morning Slot
Question
A rocket is fired vertically from the earth with an acceleration of 2g, where g is the
gravitational acceleration. On an inclined plane inside the rocket, making an angle with the horizontal, a point object of mass m is kept. The minimum coefficient of friction min between the mass and the inclined surface such that the mass does not move is :
Choose an option
Show full solutionCorrect option: A
Correct answer
Atan
Step-by-step explanation
Rocket is moving upward with acceleration 2g and gravitation acceleration is g downward direction.
So, acceleration experienced by the point object,
= 2g ( g) = 3g
At equilibrium,
N = 3mgcos
N = 3mgsin
(3mgcos) = 3mg sin
= tan
So, acceleration experienced by the point object,
= 2g ( g) = 3g
At equilibrium,
N = 3mgcos
N = 3mgsin
(3mgcos) = 3mg sin
= tan
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