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note describing about newtons law ,pascals law ,work ,power and force
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Force is the influence that changes or tends to change the state of rest or uniform motion of a body in a straight line. let force F acts on a body of mass m and produces an acceleration of a, then F = m x a Newtons second law of motion The force acting on a body is equal to product of mass of the body and acceleration produced by the force on the body. This is newtons second law of motion. SI unit of force is newton[N] 1 newton = force acting on a body of mass 1kg producing an acceleration of 1m/s^2 in its direction. Solved question and answer
The total force acting on a liquid surface is called thrust. the pressure[p] is defined as the force[F] per unit area[A] and its unit is Nm-^2 or pascal. Atmospheric pressure = 1.01x10^5 pa Pascals law Whenever external pressure is applied to any part of a liquid this pressure gets distributed all directions equally. Eg: hydraulic lift P = F/A P=PRESSURE F=FORCE A=AREA