Understanding Torque

This video tutorial explores the concept of torque, explaining it as the tendency of a force to cause rotation around an axis. It covers different definitions, including torque as a turning force and as the product of force and lever arm. The video explains torque's vector nature and provides the mathematical formula for calculating torque. Two examples demonstrate torque calculation on a door, highlighting the importance of the angle between force and lever arm. The tutorial concludes with a call to action for viewers to engage with the channel.

What is one common way to describe torque?

• A measure of an object's mass

• A force that causes linear motion

• A tendency of a force to cause an object to rotate about an axis

• A type of energy

Torque is dependent on which two factors?

• Temperature and pressure

• Mass and velocity

• Force and distance from the pivot point

• Speed and time

How is torque mathematically defined?

• As the sum of force and distance

• As the cross-product of the lever arm distance vector and the force vector

• As the product of mass and acceleration

• As the difference between potential and kinetic energy

What is the correct unit for torque?

• Watt

• Pascal

• Newton meter

• Joule

In the first example, what is the angle between the radial vector and the force vector?

• 180 degrees

• 130 degrees

• 45 degrees

• 90 degrees

What is the calculated torque in the first example?

• 15.2 meter Newton

• 40.5 meter Newton

• 27.6 meter Newton

• 33.3 meter Newton

In the second example, what is the distance from the axis of rotation to the point where the force is applied?

• 0.7 meters

• 0.8 meters

• 1.0 meters

• 0.5 meters

What angle is used to calculate torque in the second example?

• 180 degrees

• 120 degrees

• 60 degrees

• 90 degrees

What is the calculated torque in the second example?

• 40.5 meter Newton

• 27.6 meter Newton

• 15.2 meter Newton

• 33.3 meter Newton

What is the direction of the torque vector in both examples?

• Into the board

• Out of the board

• Parallel to the force

• Perpendicular to the radial vector