What is Torque? - Torque basics explained

The video tutorial explains the concept of torque using a wrench and nut example. It demonstrates how torque is calculated by multiplying force and distance, showing that a longer wrench provides more torque. The tutorial also covers gear ratios, explaining how low gears offer high torque and low speed, while high gears provide high speed and low torque. This concept is illustrated using examples of bicycles and cars, highlighting the need to shift gears based on speed and terrain.

What is the main reason a longer wrench makes it easier to loosen a nut?

• It is easier to grip.

• It requires less precision.

• It provides more torque.

• It is lighter to handle.

If a 30 cm wrench produces 27 Newton meters of torque with 90 Newtons of force, what torque is produced by a 60 cm wrench with the same force?

• 90 Newton meters

• 45 Newton meters

• 27 Newton meters

• 54 Newton meters

How does changing the size of a wrench affect the torque?

• The size of the wrench does not affect torque.

• A smaller wrench increases torque.

• A larger wrench increases torque.

• A larger wrench decreases torque.

Why is it difficult to start pedaling a bike in a high gear?

• High gear requires more balance.

• High gear is heavier to pedal.

• High gear provides high speed but low torque.

• High gear provides low speed but high torque.

What happens to the speed and torque when you switch to a lower gear while driving uphill?

• Speed increases, torque decreases.

• Speed decreases, torque increases.

• Both speed and torque increase.

• Both speed and torque decrease.