Circular Motion

Question 1

What is circular motion?

Answer 1

When an object moves in circular path at a constant speed.

Question 2

What type of acceleration does an object move in a circular path?

Answer 2

Centripetal acceleration

Question 3

Can yall prove that centripetal acceleration goes in that direction? 0-0

Use vector diagram yall

Answer 3

SLAYYY

Question 4

What direction does centripetal acceleration points towards?

Answer 4

The central point of rotation (centre of circle), which is perpendicular to the direction of motion and speed.

Question 5

What causes centripetal acceleration?

Answer 5

A centripetal force which helps maintain a circular motion

Question 6

For example, if your boyfriends connect you to a string and swing you around like cowboys, what would be the centripetal force?

Answer 6

The tension of the string

Question 7

Your boyfriends connect you to a string and swing you around like cowboy

Will you still be in a circular path if the string suddenly breaks?

Answer 7

No you will go in a linear trajectory cuz no centripetal force no centripetal acceleration.

Question 8

For example, if your boyfriends are travelling around a roundabout with you as the passenger princess, what’s the centripetal force there?

Answer 8

the friction between the car and the tyres

Question 9

For example, boyfriends are travelling around a roundabout

What happens if you increase the speed of the car by a lot?

Answer 9

Well then yall bfs need more centripetal force

Remember F = ma, and so increase speed -> increase a, and so increase F

Question 10

For example, boyfriends are travelling around a roundabout

What if all the sudden the road gets slippery and there’s no more centripetal force?

Answer 10

Yall be careful then cuz the car will probs skid and crash 0-0

Question 11

Let’s say yall bfs are race drivers, driving on a banking curve road, what’s the centripetal force there & draw it please?

Answer 11

The horizontal component of the normal force, also known as Fnsinθ

Question 12

Let’s say yall bfs are race drivers, driving on a banking curve road,

If the banking angle increases, what happens in terms of centripetal force and why?

Answer 12

Increase in centripetal force which makes you guys less dependent on the friction of the road

because the angle ‘pushes’ you towards the centre of circular path anyways

Question 13

Let’s say yall bfs are race drivers, driving on a banking curve road,

So, would you feel safer if yall bfs drive on a normal roundabout or one that has banking of curves?

Answer 13

Banking of curves because you rely less on friction of road and tyres AND they don’t need to turn the tyres that much!