Alpha Question Bank for Medical: Physics>Chapter 9 - Centre of Mass, Momentum and Collisions>Exercise-4>Q 4

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A plate in the form of a semicircle of radius $r$ $a$ has a mass per unit area of $k r$ where $k$ is a constant and $r$ is the distance from the centre of the straight edge. By dividing the plate into semicircular rings, find the distance of the centre of mass of the plate from the centre of its straight edge.

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Important Questions on Centre of Mass, Momentum and Collisions

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Alpha Question Bank for Medical: Physics>Chapter 9 - Centre of Mass, Momentum and Collisions>Exercise-4>Q 5

A point mass of

1 kg

collides elastically with a stationary point mass of

5 kg

. After their collision, the

1 kg

mass reverses its direction and moves with a speed of

2 {m s}^{- 1}

. Which of the following statement(s) is (are) correct for the system of these two masses?