Question

what is the motion of door​

Answer 1

ans:Automatic doors operate with the help of sensors. Sensors do exactly what they sound like they'd do: they sense things. There are many different types of sensors. ... When these optic or motion sensors sense motion nearby, they trigger the automatic doors to open and then close.

Answer 2

• Rotation motion is the term used to describe the opening of a door. To back up this claim, there is one cause.
• The torque generates angular acceleration, which causes the door to spin by changing the angular displacement of the door.
• The centripetal force, which is created by the links between molecules and in the hinge, retains the door in its circular motion (it would otherwise fly in a straight path).
• A rigid body spins along a fixed axis and creates torque when an external force is applied.
• A swinging door is a rigid body that rotates around a hinge in a quarter-circle motion.