WalkerKinematics of Rotational Motion and TorqueAPP1

What is angle through which a point, line, or body is rotated in a specific direction and around a specific axis?

• Angular Velocity

• Angular Displacement

• Radian

• Degree

What is the fixed point, around which an objects turns, perpendicular to the rotation.

• Axis of rotation

• Radius

• Diameter

• Circumference

What is the rate at which a body rotates about an axis?

• Linear Speed

• Rotational Speed

• Angular Speed

• Velocity

The angle through which a point, line, or body is rotated in a specific direction and around a specific axis.

• Angular Displacement

• Moment of Inertia

• Angular Velocity

What is the unit of Torque?

• r x F

• r.F

• F x r

• none of these

What is the quantity that measures the ability of a force to rotate an object an axis?

• Linear Speed

• Angular Speed

• Torque

• Centrifugal Speed

Unit of torque is

• Nm

• J

• N/m

• Watt

Two bugs ride a turntable which is rotating at a constant rate of 4 rad/s. Bug A is at a radius of 4 cm, while bug B is at a radius of 8 cm. What is the velocity of bug B?  

• 4 cm/s
• 32 cm/s
• 2 cm/s
• 1 cm/s

A gear spins at a rate of 400 revolutions/minute. Which choice is closest to its angular speed in radians/second?

• 6.67 rad/s

• 2500 rad/s

• 41.9 rad/s

• 20.9 rad/s

A fan spins with a constant angular speed of 500 radians/second. How long will it take to cover an angle of 2π radians (one revolution)?

• 0.013 s
• 0.002 s
• 76.9 s
• 6.28 s