MHT-CET

Motion In Two Dimensions question bank (Physics)

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Q1.

A particle is projected at $60^\circ$ to the horizontal with kinetic energy 'K'. The kinetic energy at the highest point is $\left(\cos 60^0 = \dfrac{1}{2}\right)$

(A)

$K$

(B)

$\dfrac{K}{\sqrt{2}}$

(C)

$\dfrac{K}{2}$

(D)

$\dfrac{K}{4}$

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Q2.

A ball of mass 'm' is attached to the end of a string having length 'l'. The ball is rotated in a horizontal circle about a vertical axis. The maximum tension that a string can bear is 'T'. The maximum angular velocity of the ball is

(A)

$\sqrt{\dfrac{T}{ml}}$

(B)

$\sqrt{\dfrac{ml}{T}}$

(C)

$\sqrt{\dfrac{T}{3ml}}$

(D)

$\sqrt{3Tml}$

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