Weight, Mass, and Gravity | GCSE Physics Practice
Mass is the amount of matter; Weight is the force of gravity pulling on that matter.
If you go to the Moon, does your mass change?
What is Weight, Mass, and Gravity | Practice?
"Mass is the amount of matter; Weight is the gravitational force acting on that matter."
What is the resultant force on an object if a 10N force acts right and a 4N force acts left?
Which of these is the correct vector equivalent of 'Distance'?
An object moves at a constant velocity. What is the resultant force?
What is the unit of the spring constant (k)?
Mass & Weight
Mass is measured in kg and stays the same anywhere in the universe.
Weight is measured in Newtons (N) and depends on the local gravity.
Weight = mass x gravitational field strength (W = mg).
On Earth, g is approximately 9.8 N/kg.
Check: If an exam question gives mass in grams (g), you MUST convert to kilograms (kg) before using W=mg.
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