Weight Chapter 41.

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Presentation transcript:

Weight Chapter 41

Weight The weight of an object is the force of gravity acting on it. Weight is a force and therefore is measured in Newtons (N) Weight (N) = Mass (kg) x 10N/kg(gravity)

Weight Example A boy has a mass of 60kg, what is his weight on earth. Weight (N) = Mass (kg) x 10N/kg(gravity) Weight (N) = 60kg x 10N/kg Weight (N) = 600N

Weight Example 2 A mobile phone has a mass of 80g, find its weight on earth. Weight (N) = Mass (kg) x 10N/kg(gravity) Convert g to kg divide by 1000 80g/1000 = 0.08kg Weight (N) = 0.08 x 10N/kg Weight (N) = 0.8N

Weight vs Mass Weight Mass Measured in Newtons (N) Mass is measured in kilograms. Weight depends on where you are. Mass is fixed Weight is a force Mass is a fixed property

Weight vs Mass The mass of an object is the amount of matter in it. The weight of an object is the force of gravity acting on it.