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Exploring Rotational Dynamics

Authored by arpana dhawan

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12th Grade

Exploring Rotational Dynamics
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16 questions

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1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the formula for torque in terms of force and distance?

τ = F - r

τ = F / r

τ = F + r

τ = F × r

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

How does angular acceleration relate to torque and moment of inertia?

Angular acceleration is independent of torque and moment of inertia.

Angular acceleration is related to torque and moment of inertia by the equation τ = I * α.

Moment of inertia has no effect on angular acceleration.

Torque is equal to the product of angular acceleration and velocity.

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Define moment of inertia and its significance in rotational motion.

Moment of inertia is a measure of an object's resistance to rotational motion, significant for determining angular acceleration under applied torque.

Moment of inertia is the same as mass in linear motion.

It measures the speed of an object in circular motion.

Moment of inertia is irrelevant to torque and angular acceleration.

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What factors affect the moment of inertia of an object?

The temperature of the object

The speed of the object

The shape, mass distribution, and distance of mass from the axis of rotation.

The color of the object

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Calculate the moment of inertia of a solid cylinder about its central axis.

I = m * r^2

I = (1/2) * m * r^2

I = (1/3) * m * r^2

I = (1/4) * m * r^2

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the expression for rotational kinetic energy?

KE_rotational = 1/2 mv^2

KE_rotational = 1/2 Iω^2

KE_rotational = Iω

KE_rotational = 2πIω

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

How does rotational kinetic energy compare to translational kinetic energy?

Rotational kinetic energy is only relevant for non-moving objects.

Rotational kinetic energy has no relation to mass or velocity.

Translational kinetic energy is always greater than rotational kinetic energy.

Rotational kinetic energy is analogous to translational kinetic energy, but applies to rotating objects.

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