Virtual Labs

Which of the following factors affects the moment of inertia of a flywheel?

a: The mass of the flywheel Explanation

Explanation

b: The radius of the flywheel Explanation

Explanation

c: The shape of the flywheel Explanation

Explanation

d: All of the above Explanation

Explanation

How is the experimental moment of inertia of a flywheel determined?

a: By measuring the rotational speed of the flywheel Explanation

Explanation

b: By measuring the force required to rotate the flywheel Explanation

Explanation

c: By measuring the angular acceleration of the flywheel Explanation

Explanation

d: By measuring the radius of the flywheel Explanation

Explanation

Which of the following is true about the moment of inertia of a flywheel?

a: It increases as the mass of the flywheel increases Explanation

Explanation

b: It decreases as the radius of the flywheel decreases Explanation

Explanation

c: It is independent of the shape of the flywheel Explanation

Explanation

d: It is directly proportional to the speed of rotation of the flywheel Explanation

Explanation

In an experiment to determine the moment of inertia of a flywheel, which of the following quantities is varied?

a: Mass of the flywheel Explanation

Explanation

b: Radius of the flywheel Explanation

Explanation

c: Angular velocity of the flywheel Explanation

Explanation

d: Torque applied to the flywheel Explanation

Explanation

Which of the following statements is true about the flywheel

a: A flywheel stores rotational energy Explanation

Explanation

b: A flywheel stores potential energy Explanation

Explanation

c: A flywheel stores kinetic energy Explanation

Explanation

d: A flywheel stores gravitational energy Explanation

Explanation

A flywheel rotates freely after the mass detaches. It completes N = 12 rotations before stopping, and the stopwatch shows t = 8 seconds. Compute the average angular velocity during this deceleration phase. (Use ω_avg = 2πN / t)

a: 2.5 rad/s Explanation

Explanation

b: 4.7 rad/s Explanation

Explanation

c: 9.4 rad/s Explanation

Explanation

d: 12.5 rad/s Explanation

Explanation

When the falling mass detaches from the axle, the flywheel continues to rotate due to:

a: The remaining potential energy of the falling mass Explanation

Explanation

b: The remaining tension in the string Explanation

Explanation

c: The rotational kinetic energy stored in the flywheel Explanation

Explanation

d: The torque due to air resistance Explanation

Explanation

MOMENT OF INERTIA OF FLYWHEEL