Gravityand

Center of Gravity

What do you know about gravity?• Gravity is a force that pulls things together based on there mass and how close they are together.

• Earth = 9.8 m/s2

• Space = 0 m/s2

• Mars = 3.69 m/s2

• Weight conversion factor from earth to Mars, – 1 lbs on earth = 0.377 lbs in

Mars

• Mars Rover weight 185lbs on earth, how much does it weight on Mars?

• 69.75 lbs

Gravitational value

Gravity of:

• Earth = 9.8 m/s2

• Space = 0 m/s2

• Mars = 3.69 m/s2

Ruler Balance

• Balance all the rulers (4) on your table.• Record the numeric mark on the ruler. Read

side that has sticker on it.• Compare your answers with your teammates.• Find the average between your teammates?

why are the marks different?

Complex Balance

Complex balanceWhere on this toothpick is the balance point?

Mark it?

What is the points of balance called?• Center of gravity is the

point at which the entire weight of a body may be considered as concentrated so that if supported at this point the body would remain in equilibrium in any position

How is it relate to robot?

• Where is the ideal place to put the brain of a mind storm robot?

• How do you balance the rest of the components?