Baseline (flightpath E): Know that the weight of an object can be calculated using the equation: W=mg and know the SI units of weight and mass. Further.

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Presentation transcript:

Baseline (flightpath E): Know that the weight of an object can be calculated using the equation: W=mg and know the SI units of weight and mass. Further (flightpath D): Rearrange the weight formula triangle to calculate an unknown quantity. Describe the effect this might have on life on larger planets. Challenge (flightpath C,B&A): Explain what gives rise to the varying strengths of gravitational force and model a comparison between the weights of 1kg of mass on different planets.

How do we calculate the weight of something? You need to know this equation for your exam!!

What would 1kg weigh on different planets? Worked example: Planet: Blargon 7 Gravity: 15.5 Weight of 1kg on Blargon 7 (using equation W=m x g): 1 x 15.5 = 15.5N To reproduce this weight on Earth (gravity 9.8) we would need to rearrange the W=m x g equation to make mass the focus. m=W/g m=15.5/9.8 m= 1.58kg To experience what 1kg of mass would weigh on Blargon 7 we would need 1.58kg on Earth