Physics Tuition Singapore – Mass,Weight and Density Important Definitions

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Physics Tuition Singapore – Mass,Weight and Density Important Definitions

1. The mass of an object is a measure of the amount of matter in the object. The SI unit of mass is kilogram (kg).
2. Inertia is the resistance of an object to a change in its state of motion or rest. The larger the mass, the greater is its inertia.
3. The attractive force between any two masses is known as gravitational force.
4. The gravitational field is a region in which a mass experiences a gravitational force.
5. Gravitational field strength g is the gravitational force acting per unit mass. The unit for g is m s^-2 or N kg^-1. The gravitational field strength is also known as the acceleration due to gravity. g =F/m

6. Gravitational field strength g is usually taken to be a constant at 10 N kg^–‘ on the surface of the Earth. It varies slightly according to the location.
7. Weight is the gravitational force acting on an object. It is equal to the product of mass and gravitational field strength. The SI unit for weight is the newton (N).
              W = mg

8. Density p of an object is its mass per unit volume. Density = mass / volume

Please contact Angie @ 96790479 or Mr Ong @ 98639633 if you need Secondary Pure or Combined Physics Tuition