Rotational Energy

Which of these gives rotational kinetic energy?

• a

• b

What is the formula for rotational kinetic energy?

Which of the following quantities is conserved in a closed system involving rotational motion?

• Rotational energy

• Linear momentum

• Angular momentum

• Translational energy

A solid sphere and a hollow sphere of the same mass and radius are rotating with the same angular velocity. Which has more rotational kinetic energy?

• Solid sphere

• Hollow sphere

• Both have the same

• Cannot be determined

What is the unit of rotational energy in the International System of Units (SI)?

• Joule

• Newton

• Watt

• Pascal

If the moment of inertia of a rotating body is doubled, what happens to its rotational kinetic energy, assuming angular velocity remains constant?

• It doubles

• It halves

• It quadruples

• It remains the same

Which of the following is an example of an object with rotational energy?

• A car moving in a straight line

• A spinning top

• A pendulum at rest

• A book on a table

How does the rotational kinetic energy of a wheel change if its angular velocity is tripled?

• It remains the same

• It doubles

• It triples

• It increases nine times

What is the relationship between rotational energy and angular velocity?

• Directly proportional to the square of angular velocity

• Inversely proportional to angular velocity

• Directly proportional to angular velocity

• Independent of angular velocity

Which experiment can demonstrate the conversion of potential energy to rotational energy?

• Dropping a ball from a height

• Rolling a ball down a ramp

• Swinging a pendulum

• Heating a metal rod

Tags

NGSS.MS-PS3-2