Day to day examples for moment of force
Answers
1) to open and shut the door we apply Air Force which is normal to the door at its handle which is provided at the maximum distance you can noticed that the force which we apply is much greater than the force which is required to open the door at the Hinges rather than on the handle itself hence the moment of force is executed here. since the handle is provided at the maximum distance from the door there we require much less force to open the door.
2) the upper circulars stone of a hard floor grinder is provided with a handle near its him that is at the maximum distance from the centre so that it can easily be rotated about the iron pivot at its centre by applying a small force at the handle.
3) for turning of steering wheel a force is applied tangentially on the rim of the wheel. the sense of rotation of wheel is changed by changing the point of application of force without changing the direction of force.
1. Taps and Turn Handles
To make use of these everyday systems, we need to provide a sideways push or pull on the handle (thus creating a force). This initial force then goes on to actually turn the handle about its point of rotation (the pivot point).
2. Hinged Doors
For the hinged-door system, the pivot point is actually the hinge itself because this is where the rotation is facilitated. The force comes from someone pushing/pulling on the door to open/close it.
3. Car Engine
What’s happening in this case is that the combustion happening inside the chamber is moving the piston up and down. This movement (force producer) acts through the rod, but the pivot point in consideration is the centre of the crankshaft. This process generates the engine torque.
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I hope these examples helped!
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