Laws of MotionHard
Question
A block of mass m resting on a wedge of angle θ as shown in the figure. The wedge is given an acceleration a towards left. What is the minimum value of a due to external agent so that the mass m falls freely ?
Options
A.g
B.g cos θ
C.g cot θ
D.g tan θ
Solution
acceleration of point A and B must be some along the line ⊥ to the surface
⇒ a sin θ = g cos θ
a = g cot θ
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