Help
Options
Didn't know it?
click below
click below
Knew it?
click below
click below
Don't Know
Remaining cards (0)
Know
retry
shuffle
restart
0:00
Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.
Normal Size Small Size show me how
Normal Size Small Size show me how
Circular Motion
| Question | Answer |
|---|---|
| What is the equation for angle in radians | θ=l/r |
| How many radians are in one full circle | 2π |
| 30 degrees is how many radians | π/6 |
| 45 degrees is how many radians | π/4 |
| 60 degrees is how many radians | π/3 |
| 90 degrees is how many radians | π/2 |
| 180 degrees is how many radians | π |
| How many mils (military angles) in a complete circle | 6400 |
| Define angular velocity | The rate of change of angular displacement |
| Define instantaneous velocity | The rate of change of displacement |
| What are the 3 equations for angular velocity | ω=θ/t ω=2π/T ω=2πf |
| What is the equation relating instantaneous and angular velocity | v=rω |
| Define centripetal acceleration | The acceleration towards the centre of a circle brought about by a circling body orbiting the centre at a constant speed but changing direction |
| What are the equations for centripetal acceleration | a=(v^2)/r a=rω^2 |
| What are the equations for centripetal force | F=(mv^2)/r F=mrω^2 |
| What direction does the centripetal force act | Towards the centre of the circle |
| What is the equation for car going over a bump | FN=mg-(mv^2)/R |
| When is the surface normal force equal to zero when a car is going over a bump | v≥√(gR |
| What supplies the centripetal force on a flat curve | Friction of tyres |
| What reduces the tyres friction | -If the tyres are worn smooth -The road is icy or oily |
| What is the equation on a banked track/conical pendulum | tanθ=(v^2)/gr |
| Why would a car skid as it turns a corner | Insufficient friction between the tyres and the road. |
| What is the equation for necessary frictional force for motion on a flat curve | F=(mv^2)/r |
| What is the equation for a car going through a dip | FN=mg+(mv^2)/r |
| What is the equation at the bottom of a rollercoaster loop/vertical circle | FN-mg=(mv^2)/r |
| What is the equation at the top of a rollercoaster loop/vertical circle | FN+mg=(mv^2)/r |
| What is the equation at the side of a rollercoaster loop/vertical circle | FN=(mv^2)/r |
Created by:
Liam P
Popular Physics sets