What are some example problems that can help me understand the concept of torque?

Here are some example problems that can help you understand the concept of torque:

1. Calculate the torque required to open a door with a force of 10 Newtons applied at a distance of 0.5 meters from the hinge.
2. Determine the torque produced by a wrench when a force of 20 Newtons is applied at a distance of 0.3 meters from the pivot point.
3. Find the torque exerted by a motor with a force of 50 Newtons applied at a distance of 0.4 meters from the center of rotation.
4. Calculate the torque needed to lift a 100 kg object with a lever arm of 0.6 meters.
5. Determine the torque required to rotate a wheel with a radius of 0.2 meters using a force of 30 Newtons.