circular motion

Question 1

What is a radian?

Answer 1

A unit of measurement of angle equal to about 57.3. Its the angle at the centre of the circle when the radius is the same as arc length

Question 2

How to you convert from degrees to radians?

Answer 2

x π/180

Question 3

How do you convert from radians to degrees?

Answer 3

x 180/π

Question 4

What is angular velocity?

Answer 4

For an object describing a circle, angular velocity is the quantity of angle swept over in a certain time

Question 5

What is the unit of angular velocity?

Answer 5

rads^-1

Question 6

How is arc length calculated?

Answer 6

S=θ/2π x 2πr
S=θt

Question 7

What is a period?

Answer 7

Time taken to complete one circuit

Question 8

What is frequency?

Answer 8

The number of circuits per second

Question 9

What is centripetal force?

Answer 9

the resultant force generated as a result of other forces

Question 10

How do you apply Newton’s 2nd law at the bottom of a circuit?

Answer 10

C-mg=mv^2/r

Question 11

How do you apply Newton’s2nd law at the top of a circuit?

Answer 11

C + mg= mv^2/r

Question 12

How do you apply Newton’s 2nd law at the side of the circuit?

Answer 12

C=mv^2/r