Force Mandouli

GOVT HIGH SCOOL MANDOULI PROJECT: FORCE TEACHER NAME:-Smt Poonam Billing Amarjeet Singh Class : 9th Student name : Dalvir singh Gurwinder singh

DEFINATION • Force, in physics, any action or influence that accelerates an object. Force is a vector, which means that it has both direction and magnitude

NET FORCE • When several forces act on an object, the forces can be combined to give a net force. The net force acting on an object, the object's mass, and the acceleration of the object are all related to each other by Newton's second law of motion, named after English physicist and mathematician Isaac Newton

Force acting on an object • . The second law of motion states that the acceleration an object experiences multiplied by the mass of the object is equal to the net force acting on an object. Thus, if a given force acts on two objects of different mass, the object with a larger mass will have a lower acceleration.

• An object experiences a force when it is pushed or pulled by another object.

Gravitational force • An object can also experience a force because of the influence of a field. For example, a dropped object accelerates toward the ground because of the presence of the gravitational field

ELECTRIC FORSE electrical charges attract or repel each other because of the presence of an electric fie

• Usually, several forces act on an object at once. If multiple forces combine to give a net force that is zero, then the object will not accelerate; the object will either remain motionless or continue moving at a constant velocity. For example, if a person pushes a shopping cart with a force equal in magnitude to the force of friction that opposes the cart's motion, the forces will cancel, giving a net force of zero. As a result, the cart will move down the aisle with a constant velocity.

UNITS OF FORCE • In the international system of units, the unit of force is the newton, which is the force that imparts to an object with a mass of 1 kg an acceleration of 1 m/sec2. In English units, the unit of force is the poundal, which is the amount of force that accelerates a 1-lb object 1 ft/sec2.

Electric force in clouds

Centripetal Force When a ball is whirled in a circle, it is accelerating inward. This inward acceleration is caused by a centripetal, or center-seeking, force supplied by the tension in the string.

Gravitational force

• Torque, in engineering and mechanics, a twisting effort applied to an object that tends to make the object turn about its axis of rotation

Pressure, in mechanics, the force per unit area exerted by a liquid or gas on a body

• or surface, with the force acting at right angles to the surface uniformly in all directions