Torque is a type of force which causes an object to rotate around an axis, which is called a moment arm It is typically measured in Newton meters (Nm). Torque acts in a clockwise or counter-clockwise direction, depending on the sign of the force and the direction of the moment arm. It is a fundamental concept in mechanics and engineering and is used to calculate how much power is required to rotate an object, how much force is required to move an object, or how much energy is required to hold an object in a certain position.
1. Calculating the torque required to lift a heavy load: This would determine how much power is required to move a heavy object, and how strong of a motor would be needed to do the job.
2. Engineering a car engine: Torque is the main force used to rotate the crankshaft, and is widely used to help design and build a car engine.
3. Designing a lever arm mechanism: This requires determination of the amount of force needed to move one end of a lever arm, and the required torque at both ends.
4. Calculating the power needed to spin a planet: Torque can be used to calculate the amount of power required to keep a planet spinning.
5. Analyzing the strength of a bridge: Engineers need to be aware of the torque of the bridge, in order to ensure it can hold up under increased weight or changing conditions.