Rotational Motion

Front

What is the velocity formula for uniform circular motion?

Back

v = rω, where v is the linear velocity, r is the radius, and ω is the angular velocity.

Front

What shape do planets orbit the Sun in?

Back

Ellipses.

Front

Which arm requires more muscle strength to lift a 25 pound dumbbell?

Back

An arm with a longer forearm.

Front

What does Rotational Inertia depend on?

Back

Both Mass and its Distribution.

Front

What does Kepler's first law state about the orbits of planets?

Back

The orbits of the planets are ellipses.

Front

Define angular velocity.

Back

Angular velocity is the rate of change of angular displacement and is measured in radians per second.

Front

What is the formula for centripetal acceleration?

Back

a_c = v^2 / r, where a_c is centripetal acceleration, v is linear velocity, and r is the radius.

Front

What is the relationship between torque and rotational motion?

Back

Torque is the rotational equivalent of linear force and is calculated as τ = rF sin(θ), where τ is torque, r is the distance from the pivot point, F is the force applied, and θ is the angle between the force and the lever arm.

Front

What is the moment of inertia?

Back

The moment of inertia is a measure of an object's resistance to changes in its rotational motion, depending on the mass distribution relative to the axis of rotation.

Front

What is the principle of conservation of angular momentum?

Back

In a closed system, the total angular momentum remains constant if no external torques act on it.