Uniform Circular Motion

Front

What is Uniform Circular Motion?

Back

Uniform Circular Motion is the motion of an object traveling at a constant speed along a circular path.

Front

What is the direction of velocity in Uniform Circular Motion?

Back

The velocity is always tangent to the line of the circle.

Front

What is Angular Momentum?

Back

Angular Momentum is the product of rotational inertia and angular velocity.

Front

What affects the rotational inertia of an object?

Back

The distribution of mass relative to the axis of rotation affects rotational inertia.

Front

Where is the mass located for greater rotational inertia in a flywheel?

Back

The mass is nearer the rim for greater rotational inertia.

Front

What is the formula for centripetal acceleration?

Back

Centripetal acceleration (a) = v²/r, where v is the linear velocity and r is the radius.

Front

Calculate the centripetal acceleration of an object moving at 0.5 m/s in a circle of radius 1 m.

Back

Centripetal acceleration = 0.25 m/s².

Front

What is a radian?

Back

A radian is the angle subtended at the center of a circle by an arc equal in length to the radius.

Front

Is a radian a dimensionless quantity?

Back

Yes, a radian is a dimensionless quantity.

Front

What is the relationship between radians and degrees?

Back

180 degrees is equal to π radians.