Laws of Motion

Section: Physics

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Question : 17 of 20

Marks: +1, -0

A block of base 10 cm×10 cm and height 15 cm is kept on an inclined plane. The coefficient of friction between them is

\sqrt{3}

. The inclination θ of this inclined plane from the horizontal plane is gradually increased from 0°. Then

[JEE Adv 2009 P1]

at θ = 30°, the block will start sliding down the plane.
the block will remain at rest on the plane up to certain θ and then it will topple.
at θ = 60°, the block will start sliding down the plane and continue to do so at higher angles.
at θ = 60°, the block will start sliding down the plane and on further increasing θ , it will topple at certain θ.

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