Mass vs. Weight Mass Weight Gravity Calculating Weight Metric and The Standard/Imperial system of measurement Mass vs. Weight Mass and Weight in Zero Gravity Scales

TeachWithFergy Preview File Please enjoy this preview of your Student Version of the Power Point. Some slides appear blank because they have been removed. Student versions have portions of the text removed which is given in the teacher version and appear as ______ Other slides may have ........... on them, this represents writing that has been removed. Please note that the Entire Unit Package can also be purchased at a steep discount from my Store.

Mass Mass – the amount of matter inside an object Measured using a balance compared to a known amount of matter (known mass) __________ Mass doesn’t depend on location Your mass would be the same anywhere in the Universe because the amount of matter inside you is the same everywhere in the Universe

Weight Weight – The force of gravity on an object Weight is measured on a scale _________ Weight changes based on location as each location has a different amount of gravity If you were to travel to a different planet (i.e. Mercury which has much less gravity), your weight would change

This slide has been removed

Gravity Everything produces gravity. The Earth pulls on you but you also pull back on the Earth The more massive an object is, the more gravity it produces Therefore, large objects like the Earth, Sun, etc., create a much larger gravitational attraction then you do ___________

Calculating Weight __________ F (Weight or Force of gravity) = m x a The Metric system uses the acceleration due to gravity of ~10 m/s2 and gives weight in Newtons (N) The Imperial (Standard/American) system uses the acceleration due to gravity of 32 ft/s2 and gives weight in pounds

This slide has been removed

Metric System Example If a 20 kg object experiences an acceleration due to gravity of 10 m/s2, what will be its weight in Newtons? Answer: Weight = Mass x Acceleration Weight = 20 kg x 10 m/s2 Weight = 200 N

This slide has been removed

Check Your Understanding A 100 kg person stands on a scale on the Moon looks down and sees a reading of 160 N, what is the acceleration due to gravity on the Moon?

Imperial (Standard) System Example If an object which has a mass of 5 slugs (pound-mass) and experiences an acceleration due to gravity of 32 ft/s2, what will be its weight in Pounds? Answer: Weight = Mass x Acceleration Weight = 5 slugs x 32 ft/s2 Weight = 160 lbs.

Check Your Understanding If an object which has a weight of 180 pounds and experiences an acceleration due to gravity of 32 ft/s2, what is its mass in slugs/pounds-mass?

This slide has been removed

Check Your Understanding You have a mass of 50 kg on Earth. If you go to Jupiter which has a gravity that is 2.34 times greater than Earth’s: what will your mass be? what will your weight be in Newtons?

Mass vs. Weight Mass Weight Definition How its measured Location The amount of matter inside an object A measure of the pull of gravity on an object How its measured On a balance compared to a known mass On a scale Location Doesn’t change no matter location Changes based on location. Larger planets have more gravity which would cause an increase in weight Unit(s) of measurement Kilograms (kg) Slugs or Pound-mass Newtons (N) Pounds (lbs)

Mass vs. Weight - Review In slideshow mode, click on the image to see how your videos are embedded into the lesson.

Mass and Weight in Zero Gravity Where do we feel zero gravity? ______ What happens to mass and weight in zero gravity? Mass – ________ Weight – _______ ___________

This slide has been removed

How Much Does Thor’s Hammer Weigh? Connecting Mass, Weight and Density When you have completed the video answer the following question: What property (mass, weight or density) makes Thor’s hammer so destructive? Explain your answer using terms we’ve discussed so far. This video has been removed. In the full version, this video is embedded directly into your notes. Simply click the image in slideshow mode and it will automatically open in your browser.