A uniform rectangular metal plate is rotated about an axis perpendicular to its plane…

PHYSICS · Single correct · A Level · Physics · Engineering physics · Engineering physics

Problem

A uniform rectangular metal plate is rotated about an axis perpendicular to its plane and passing through its centre. The experimentally measured radius of gyration about this axis is

25\,\text{cm}

. If the length of the plate is

60\,\text{cm}

, calculate its breadth. (a)

65\,\text{cm}

(b)

62\,\text{cm}

(c)

50\,\text{cm}

(d)

87\,\text{cm}

Related theory

Moment of Inertia
Rotational dynamics

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