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Physics-

General

Easy

Question

A body of mass 3 kg is acted on by a force which varies as shown in the graph below. The momentum acquired is given by (given initial momentum $equals 0$ )

Zero
5 N-s
30 N-s
50 N-s

The correct answer is: 50 N-s

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A uniform rod of length $L$ and mass $M$ is pivoted at the centre. Its two ends are attached to two springs of equal spring constant $k.$ The springs are fixed to rigid supports as shown in the figure, and the rod is free to oscillate in the horizontal plane. The rod is gently pushed through a small angle $theta$ in one direction and released. The frequency of oscillation is

A uniform rod of length $L$ and mass $M$ is pivoted at the centre. Its two ends are attached to two springs of equal spring constant $k.$ The springs are fixed to rigid supports as shown in the figure, and the rod is free to oscillate in the horizontal plane. The rod is gently pushed through a small angle $theta$ in one direction and released. The frequency of oscillation is

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