Tag: physics

A lever, screw and wheel are example of simple machine. 

A force which is applied at one point on the lever in order to move an object is called $effort$ force and hence is the part of lever which we are trying to move. 

A flagpole uses a pulley at the top to allow a rope to change the direction of the force, making it easier to raise the flag.

D. Wedge is used to split a log. An axe or knife blade is a wedge.

D. Screw is simple machine which is used to hold to objects together

Move the fulcrum close to the load to reduce the amount of effort needed to lift something using a first class lever.If, we move the fulcrum towards the effort end, the length of effort arm will reduce and that of load arm will increase, resulting in a lower mechanical advantage and necessitating more effort to do the same amount of work.As a result, the mechanical advantage is more (and less effort would be required).

A force which is applied at one point on the lever in order to move an object is called $effort$ force. 

The wheel and axle is a classic example of a simple machine that reduces the force required to rotate an object.

A Solid-State Drive (SSD) uses NAND flash memory (integrated circuits) to store data persistently without moving parts, making it durable against physical shock.