pressure acting on a surface can be increased by changing the force?

) Why a person should lie down flat on thin ice (2) Rear wheels of buses and trucks are usually double. Similarly tanks and bulldozer's are fitted with caterpillar tracks rather than wheels and huge buildings and dams have wide bases. On the other hand, there are many applications which require lar..

Thrust and Pressure - In the beginning of this chapter, we have defined the force as an external agent, which changes the direction of motion, speed or shape of the body. All along we were discussing only about the forces acting at a point on a body..

A liquid may be made to boil at any desired temperature by changing the external pressure. For example, a liquid may be made to boil at higher temperature by increasing the pressure on its surface, as is done in a pressure cooker. It may ..

Why does a gas exert pressure on the walls of container? Consider only those molecules which are moving horizontally. Each molecule hits the container wall and bounces back with the same speed, because the collision is elastic. The molecule then travels in the opposite direction. During ..

The pressure on A is due to the weight of the liquid acting on it. Mass of the liquid = Volume x Density = A x h x d Weight in newtons = A x h x d x g (which is force) The above expression also applies to any depth in the liquid. Hence, the pressureh..

Surface tension is also related to the intermolecular forces in the liquid. The molecules in liquids are held closely and hence attract each other. A molecule in the bulk of the liquid is attracted equally on all sides so that the net attractive pull on the molecule is zero. Ho..

In real life an object which is moving over a horizontal surface does not continue with constant velocity when the accelerating force is removed. Instead the object slows down and eventually stops. The deceleration is caused by a frictional force between the object and..

External forces acting on a body, bring about a change in its state or configuration. The latter is possible when the body is not free to move, but the molecules are compelled to change their positions. Such forces are called deforming forces..

When we heat a solid, we add energy to the system increasing the vibration of the particles. Eventually these particles break free from their binding forces and melt. The normal melting point of a crystal is the temperature at which it melts under one atmospheric pressure..