DIFFERENCE BETWEEN FORCE AND PRESSURE EXPLAINED !!

Force and Pressure are the two important concepts of physics which are often erroneously interchanged by the people. But, these two are not same at all, as there is a vast difference between force and pressure,we will discuss about the difference between them in this post.

FORCE:

Force is the pull or push on an object which can change the velocity of the object on which it is applied. We can say that if force is applied on an object from one direction and there is no opposing force, then the object will move. If it’s already moving, it will either get faster or slower depending upon the direction of the applied force.

PRESSURE:

Pressure can be explained as force applied on a unit area.When the force is applied over a large area, then the pressure developed.

Now have you ever wondered, why tools which are made to cut, chop, trim or pierce always have sharp edges? Or why heavy vehicles always have fat tyres? This is only due to pressure, which refers to the physical force per unit area.

The difference between force and pressure is summarized in the table given below:

 

WHY SMALLER WHEELS ARE USED IN SCOOTERS ?? KNOW HERE !!

Scooters are often used as a way to get around that’s both good on fuel as well as easy on the pocket. They generally weight less than motorcycles but are also slower. However, the type of wheels that you have on a scooter, whether they’re big or small, can make a lot of difference.

More common these days are that scooters are getting 12” and 13” inch wheels. So what is the advantage? 

Using small tyres in a scooter provides additional space between the seat and tyre, where you can mount the engine and transmission. Because of small size only, this space is available. Hence the scooter is compact, has under seat storage and space at front for keeping your legs and goods.

Also, small wheels and tyres helps in incredibly quick steering. But again it leads to poor handling at higher speed.

So,the main reason for giving smaller wheels to scooters is to reduce the weight of the vehicle, increase the space requirement, and to offer a great manuvarity in city traffic.When it comes to poor handling at higher speed, scooters are not designed to run at high speed that is why smaller wheels are provided.

WHY TRACTORS HAVE 2 BRAKE PEDALS? CHECK OUT HERE !!

Tractors are equipped with 2 brake pedals. There is a specific reason behind this. 

In tractors, each pedal controls one side of the tractors rear-drive wheel.y using one pedal this allows the tractor to lock that wheel on the spot forcing the other rear-drive wheel to swing in an arch around the locked wheel.

During filed operations, a tractor should take a turn as minimum radius as possible. So, two brakes are provided in tractor because by pressing left side brake, left wheel stops rotating, the right wheel rotates around left wheel and vice-versa. Thus, turning radius decreases. A simple mechanism always provided in the tractor to lock both brakes for on-road operations to avoid accidents. Below figure shows two brakes with locking mechanism. B and C are two brakes for each wheel, while A is locking mechanism.