Vertical Circles Review

Vertical Circles/G-Force Review

Select A or B on the upcoming question

Multiple Choice

You draw your forces starting...

• A) On the thing moving in a circle

• B) from the middle of the circle

Multiple Choice

In your centripetal force equation, how do you know if forces are positive or negative?

• Positive forces point up

• Positive forces point down

• Positive forces point to the center of the circle

• Positive forces point away from the center of the circle

Take a few seconds to get your answer. Click it on the next slide.

Multiple Choice

Answer.

• A

• B

• C

• D

Multiple Choice

When would we use force tension?

• When a car is driving in a circle

• When a skateboarder goes around a loop

• When a roller coaster goes upside-down

• When something is pulled by a rope or string

Multiple Choice

What is normal force?

• When a surface pulls you towards it

• When a surface pushes you away from it

• When a string pulls you

• force gravity

Multiple Choice

The slowest you can go under the top of a loop without falling means for a split second, you just barely lose contact with the surface. To solve for this speed, you would set normal force equal to what?

• 9.8

• Tension

• Mass

• 0

Multiple Choice

Over the top of a hill, like this picture, which way does normal force point?

• Up/Away from the center of the circle

• Down/Towards the center of the circle

• Left, not in the centripetal direction

• Right, not in the centripetal direction

Multiple Choice

Under the top of a loop, like in this picture, which way does normal force point?

• Up, away from the center of the circle

• Down, towards the center of the circle

• Left, ignore it

• Right, ignore it

Multiple Choice

Is G-Force a "real" force you will use in F=ma?

• Yes it is a real force

• Sometimes you use it like a real force

• No, it's a 'feeling', not a real force

• No but you can still use it in F=ma

Multiple Choice

G-Force is Fn/Fg. When would your G-Force be the biggest?

• When your normal force is small

• When your normal force is big

• When you are in space

Multiple Choice

In a vertical loop, when would you feel the most G's?

• At the left side

• At the ride side

• At the top of the loop

• At the bottom of the loop

Where in this picture would your normal force be biggest, G-Force be biggest, and you would feel heaviest?

Multiple Choice

Answer.

• A

• B

• C

• D