LCD Developments at RCA

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Mass and Weight
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What is Mass?

• Mass is a measure of the amount of matter that
  an object contains.
• The mass of an object is the same throughout
  the universe.
• The metric unit of mass is the kilogram
• 1 kilogram 1,000 grams

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What is Weight?

• Weight is a force. The weight of an object is
  equal to the force of gravity between the object
  and the earth.
• The force of gravity changes slightly from one
  part of the earth to another so the weight of an
  object can also change depending on its location.
• Since the force of gravity on each planet is
  different, the weight of an object is different
  from one planet to another.
• The metric unit of weight is the Newton (N)

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How are Mass and Weight Connected?

• The weight of an object in Newtons (N) is equal
  to the mass of an object in kilograms (kg)
  multiplied by the force of gravity.
• On earth, the force of gravity is 9.8 meters per
  second each and every second (9.8 m/sec2) so
• Weight or Force (N) Mass in kg x 9.8
• Therefore, there are 9.8 N/kg
• If using grams, there are .0098 N/g
• Weight or Force (N) Mass in g x .0098
• Or
• 1 N 102 grams of
  force

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How much do you weigh on another planet?

• How much do you weigh?
• Convert your weight in pounds to kilograms
• 1 pound 0.454 kilogram
• Use the surface gravity value of a planet from
  the list shown on the following page to calculate
  your weight in Newtons, then convert to pounds.
• 1 pound 4.45 Newtons
• If you weigh 50 pounds on earth, how much do you
  weigh on Jupiter?

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Surface Gravity Forces of the Planets
Planet Newtons/kilogram
Mercury 3.68 Venus 8.84 Earth 9.80 Mars 3.7
2 Jupiter 26.04 Saturn
11.59 Uranus 9.18 Neptune
11.30 Pluto 0.65 The Moon 1.62
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