When a door opens inside the room, the torque that acts on the door depends on the direction of the applied force (such as when you push or pull the door handle). Here's how to think about the torque:
- Hinges as the pivot: The door hinges act as the pivot point. When you apply force to the handle (which is at the edge of the door, farthest from the hinges), this creates a turning effect or torque.
- Direction of torque: The direction of torque is determined by the direction of the applied force and its position relative to the pivot (the hinges).
- If you push the door handle in a direction that pushes the door away from you (towards the inside of the room), the torque will cause the door to rotate in such a way that the inside face of the door swings inward.
- The torque direction can be described using the right-hand rule: if you point the fingers of your right hand in the direction of the applied force (pushing the door handle inward), your thumb will point in the direction of the rotational axis. In this case, the thumb would point counterclockwise (from the perspective of someone looking at the door from the inside of the room).
So, the torque will act in a counterclockwise direction as the door opens inward into the room.
