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Most Important Selected Qs for JEE AdvancedPhysicsLaws of Motion

A block of mass m is released on a smooth inclined wedge of inclination 30^ and mass M . Height of the block (from ground) varies with time as h=1.5-1.5 t^2 . ( h in metre and t= time in second). The acceleration of M is x 3 ~m / s ^2 . Find the value of x :

Correct answer

2

Step-by-step solution

a _ x and a _ y component of acceleration of m and a acceleration of M . aligned & a_y a+a_x = 1 3 & a+a_x= 3 a_y=3 3 & m g-N 30^ =ma_y & N 30^ = ma_x aligned a _ y = | d^2 h d t^2 |=3 on solving aligned a & = 2 3 x & =2 aligned

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