Understanding Torque

The video tutorial introduces torque, explaining its relation to the center of mass and how force applied away from the center causes rotation. Torque is defined as the product of force and distance, with units of newton meters. The video differentiates torque from work, emphasizing that torque involves perpendicular force and distance vectors. An example calculation demonstrates how to determine torque and discusses the concept of balancing torques, highlighting mechanical advantage.

What happens when a force is applied at the center of mass of an object?

• The object accelerates in the direction of the force.

• The object rotates around its center of mass.

• The object remains stationary.

• The object moves in a circular path.

When a force is applied away from the center of mass, what is the resulting motion of the object?

• The object accelerates linearly.

• The object rotates around the center of mass.

• The object moves in a straight line.

• The object remains stationary.

What is the unit of torque?

• Joules

• Newton meters

• Kilograms

• Watts

How is torque different from work?

• Torque involves perpendicular force and distance vectors.

• Torque involves parallel force and distance vectors.

• Torque is measured in joules.

• Torque is a measure of energy.

What is the moment arm in the context of torque?

• The distance from the pivot point to the force application point.

• The mass of the object.

• The force applied to the object.

• The angle of rotation.

What is the convention for the sign of torque when rotating counterclockwise?

• Torque is undefined.

• Torque is negative.

• Torque is positive.

• Torque is zero.

In the given example, what is the torque when a 5 N force is applied at a 10 m distance?

• 25 newton meters

• 50 newton meters

• 10 newton meters

• 5 newton meters

If an object is not rotating, what can be said about the net torque acting on it?

• The net torque is zero.

• The net torque is negative.

• The net torque is positive.

• The net torque is undefined.

How does the concept of mechanical advantage relate to torque?

• It allows for greater speed.

• It balances forces at different distances.

• It increases the mass of the object.

• It reduces the force required.

What happens when you apply double the force at half the distance in terms of torque?

• The torque is halved.

• The torque remains the same.

• The torque is doubled.

• The torque is quadrupled.