Question

lno 2 in science force and pressure
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Answer 1

HERE IS YOUR ANSWER MATE ----

FORCE AND PRESSURE

KEYNOTES

• Force: a push or a pull on an object is called force. Force may impart motion to an object.

• it is applied on an object in the same direction add to one another.

• Magnitude: the strength of a force is usually expressed by its magnitude

• State of motion: The state of motion of an object is described by its speed and the direction of motion.

• Muscular Force: The force resulting due to the action of muscles is known as the muscular force.

• Contact Force: The force which is applied when it is in the contact with the object.

• Non-contact force: The force exerted on an object without touching it known as non contact force.

• Gravitational force: the attractive force of earth which acts upon all the objects is called force of gravity or gravitational force.

• Pressure: The force acting on a unit area of a surface is called pressure. It acts perpendicular to the surface on which pressure is exerted.

• Pressure= force/area on which it acts. Lesser the area, greater is the force.

• Both liquids and gases exert pressure on the wall of their containers.

• Atmospheric pressure: The pressure on the atmospheric air is known as atmospheric pressure. This weight of air column over a unit 1cm2.

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Answer 2

ok,

Force: In physics, the force is pulling and pushing effects that something has on something else.

Unit of force is Newton and dyne.

pressure: In physics, pressure is a force that u produce when u press hard on something.

Unit of pressure is pascal.

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