Understanding Mass, Force, and Gravity Interplay
Explore the relationship between mass, force, and gravity through illustrations and explanations. Learn how weight is a measure of the force of gravity on an object, and discover how to calculate weight using the gravitational field strength. A helpful resource for educators and learners alike.
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Presentation Transcript
Mass, Force and Gravity Mass Amount of stuff (atoms/molecules) in an object. Measured in kg. Force Measures the gravitational pull on something. Measured in N (newtons) Earths Gravitational Field Strength 10N/kg. (The gravitational field strength at the surface of the Earth produces a force of approximately 10 N on every mass of 1 kg)
Gravitational field Sun s gravitational force makes the Earth move in an orbit around the Sun. Earth s gravitational force makes the ball move down towards the centre of the Earth.
Putting it all together The apple has mass (kg) It gets pulled to the ground at a force(this can be measured in Newtons) The earth s gravitational field strength pulls the apple towards it
Now Weight Is a measure of force pulling something to the ground due to gravity Hang on a minute that sounds very familiar
Weight = Force Weight is measured in N (newtons)
Putting it all together The apple has mass (kg) It gets pulled to the ground at a force(this can be measured in Newtons) = WEIGHT The earth s gravitational field strength pulls the apple towards it
How can we calculate weight? We can use an equation we already know to help us: g (gravitational field strength) = force / mass If Force = Weight Weight = Mass x g (gravitational field strength) Memorise: W = m X g
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