Understanding Torque and Force Equilibrium

Which of the following best defines torque?

• The rate of change of velocity

• The turning effect of a force about a point or axis

• The product of mass and acceleration

• The force acting perpendicular to a surface

Tags

NGSS.HS-PS2-1

Which condition must be satisfied for an object to be in rotational equilibrium?

• The net force must be zero

• The net torque must be zero

• The net acceleration must be zero

• The net velocity must be zero

Which of the following is NOT a unit of torque?

Tags

NGSS.HS-PS2-4

If the sum of clockwise torques equals the sum of counterclockwise torques, the system is said to be in:

• Translational equilibrium

• Rotational equilibrium

• Dynamic equilibrium

• Static equilibrium

Which of the following statements is true about force equilibrium?

• The sum of all forces acting on a body is zero

• The sum of all torques acting on a body is zero

• The body must be moving at constant speed

• The body must be rotating