Alpha Question Bank for Medical: Physics>Chapter 10 - Rotational Mechanics>Exercise-1>Q 56

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Consider a uniform square plate of side $a$ and mass $m$ . The moment of inertia of this plate about an axis perpendicular to its plane and passing through one of its corners is

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Important Questions on Rotational Mechanics

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Alpha Question Bank for Medical: Physics>Chapter 10 - Rotational Mechanics>Exercise-1>Q 57

The product of the moment of inertia and the angular acceleration is:

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Alpha Question Bank for Medical: Physics>Chapter 10 - Rotational Mechanics>Exercise-1>Q 58

A disc of radius

2 m

and mass

200 kg

is acted upon by a torque

100 N m .

Its angular acceleration would be

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Alpha Question Bank for Medical: Physics>Chapter 10 - Rotational Mechanics>Exercise-1>Q 59

Rotational power in rotational motion is

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Alpha Question Bank for Medical: Physics>Chapter 10 - Rotational Mechanics>Exercise-1>Q 60

A constant torque of

31.4 N - m

is exerted on a pivoted wheel. If the angular acceleration of the wheel is

4 π r a d / s^{2}

, then the moment of inertia of the wheel is

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Alpha Question Bank for Medical: Physics>Chapter 10 - Rotational Mechanics>Exercise-1>Q 61

A body whose moment of inertia is

3 kg m^{2}

is at rest. It is rotated for

20 s

by a torque of

6 N m

, angular displacement of the body will be

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Alpha Question Bank for Medical: Physics>Chapter 10 - Rotational Mechanics>Exercise-1>Q 62

A force

\vec{F} = 4 \hat{i} - 10 \hat{j}

acts on a body at a point having a position vector

- 5 \hat{i} - 3 \hat{j}

relative to the origin of coordinates on the axis of rotation. The torque acting on the body about the origin is:

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Alpha Question Bank for Medical: Physics>Chapter 10 - Rotational Mechanics>Exercise-1>Q 63

A force

\vec{F} = 2 \hat{i} + 3 \hat{j} - \hat{k}

acts at a point

(2, - 3, 1)

. Then the magnitude of the torque about the point

(0, 0, 2)

will be

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Alpha Question Bank for Medical: Physics>Chapter 10 - Rotational Mechanics>Exercise-1>Q 64

In case of torque of a couple if the axis is changed by displacing it parallel to itself, torque will