SS 2 Physics (1st Term)

physics Secondary

MACHINES

Machines make our work simpler. It is a force producing device by which a large force called load can be overcome by a small applied force called effort Terminologies Used In Machines FORCE RATIO (MECHANICAL ADVANTAGE ) VELOCITY RATIO EFFICIENCY MECHANICAL ADVANTAGE We define effort as the force applied to a machine and load as […]

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physics Secondary

SIMPLE HARMONIC MOTION

This is the periodic motion  of  a body or particle  along a straight  line  such that the acceleration of  the body  is directed  towards  a fixed  point . A particle undergoing simple harmonic motion will move to and fro in a straight line under the influence of a force. This influential force is called a

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physics Secondary

EQUILIBRIUM OF FORCES

CONDITIONS FOR EQUILIBRIUM   A body is said to be in equilibrium if under the action of several forces, it does accelerate or rotate. The sum of the upward forces must be equal to the sum of the downward forces. The sum of the clockwise moment above a point must be equal to the sum

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physics Secondary

NEWTON’S LAW OF MOTION

NEWTON’S LAWS OF MOTION Newton’s first law of motion states that everybody continues in its state of rest or of uniform motion in straight line unless it is acted upon by a force. The tendency of a body to remain at rest or, if moving, to continue its motion in a straight line is called

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physics Secondary

PROJECTILES AND ITS APPLICATION

MEANING OF PROJECTILE A projectile motion is one that follows a curved or parabolic path .It is due to two independent motions at right angle to each other .These motions are a horizontal constant velocity a vertical free fall due  to gravity Examples of projectile motion are the motion of; a thrown rubber ball re-bouncing

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physics Secondary

SCALAR AND VECTOR QUANTITIES

CONCEPT OF SCALAR AND VECTOR QUANTITIES Physical quantities are divided into scalar and vector quantities. A scalar is one which has only magnitude (size) e.g. distance, speed, temperature, volume, work, energy, power, mass etc. A vector quantity has both magnitude and direction e.g. force, weight, magnetic flux, electric fields, gravitational   fields etc. VECTOR REPRESENTATION A

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