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# Points to Remember

Mechanics is divided into statics and dynamics.

Laws of Motion (Science)

Points to Remember

┬Ę                 Mechanics is divided into statics and dynamics.

┬Ę                 Ability of a body to maintain its state of rest or motion is called Inertia.

┬Ę                 Moment of the couple is measured by the product of any one of the forces and the perpendicular distance between two forces.

┬Ę                 SI unit of force is newton (N). C.G.S unit is dyne.

┬Ę                 When a force F acts on a body for a period of time t, then the product of force and time is known as ŌĆśimpulseŌĆÖ.

┬Ę                 The unit of weight is newton or kg f

┬Ę                 The weight of a body is more at the poles than at the equatorial region.

┬Ę                 Mass of a body is defined as the quantity of matter contained in the object. Its SI unit is kilogram (kg).

┬Ę                 Apparent weight is the weight of the body acquired due to the action of gravity and other external forces on the body.

┬Ę                 Whenever a body or a person falls freely under the action of EarthŌĆÖs gravitational force alone, it appears to have zero weight. This state is referred to as ŌĆśweightlessnessŌĆÖ.

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10th Science : Chapter 1 : Laws of Motion : Points to Remember | Laws of Motion | Science