Uniform Circular Motion

Question 1

Three things that are important in uniform circular motion

Answer 1

1)Constant speed
2)Changing velocity (constant magnitude but changing direction)
3)Uniform acceleration (Constant magnitude but changing directions)

Question 2

How is the speed in uniform circular motion?

Answer 2

Constant speed

Question 3

How is the velocity in uniform circular motion?

Answer 3

Changing velocity (changing direction)

Question 4

How is the acceleration in uniform circular motion?

Answer 4

uniform acceleration (even tho direction is changing)

Question 5

What is the direction of velocity in uniform circular motion?

Answer 5

Tangiential to the motion of the object

Question 6

What is the direction of acceleration in uniform circular motion?

Answer 6

Towards the center of the circle

Question 7

Unit of Period

Answer 7

Second

Question 8

Unit of frequency

Answer 8

per second or hertz

Question 9

Unit of Tangential velocity

Answer 9

m/s (meter per second)

Question 10

Unit of centripetal acceleration

Answer 10

m/s2

Question 11

Unit of centripetal force

Answer 11

N (newtons)

Question 12

What is Period(T)?

Answer 12

Time taken to complete the one cycle in circular motion

Question 13

What is frequency(f)?

Answer 13

Number of cycle that completed in 1s

Question 14

Equation for Period(T)

Answer 14

T=total time /number of cycle

Question 15

Equation for frequency (f)

Answer 15

f=number of cycles/time

Question 16

How period and frequency relate?

Answer 16

inversely proportional
T=1/f

Question 17

Formula for tangential velocity

Answer 17

vt=2pi.r/T

vt=r.w

(w=omega=angular velocity)

Question 18

Formula for centripetal acceleration

Answer 18

ac=v2/r =r.w2

Question 19

Formula for Centripetal force

Answer 19

Fc=m.ac

Question 20

Why there is acceleration in circular motion?

Answer 20

bcus of the applied force

Question 21

How is the direction of force in circular motion?

Answer 21

Towards the center of the circle

Question 22

The dirction of force and acceleration are the same in circular motion.True or False?

Answer 22

True

Question 23

What is the sign for force that directs towards the center of the circle?

Answer 23

Positive

Question 24

What is the sign for force that directs away from the center of the circle?

Answer 24

Negative

Question 25

What wull happen if the force is not applied on circular motion?

Answer 25

There is no circular motion if there is no applied force. The object will leave from circular path along the tangential velocity. (if there is no gravitational force)

Question 26

Is there acceleration if ther is only balanced force is applied?

Answer 26

No,there is no acceleration There is acceleration if the applied force are unbalanced.

Question 27

What is angular displacement (theta)?

Answer 27

The displacement of the circular motion Unit=radian or degree

Question 28

What is 1rad?

Answer 28

The displacement in the circular motion when the length of the arc is equal to the radius of the circle.

Question 30

Formula for angular displacement (theta)

Answer 30

Theta (rad)=arc(s)/ radius(r)

Question 31

What is angular displacement in one complete circle?

Answer 31

2pi

Question 32

2pi rad is equal to _____ degree.

Answer 32

360

Question 33

Formula for angular speed

Answer 33

Speed=angular distance/time period for 1 revolution

Question 34

Unit for angular velocity(w;omega)

Answer 34

rad/s

Question 35

Equation for angular velocity(w)

Answer 35

w=theta/time

Question 36

What is the relation b/w tangential velocity and angular velocity?

Answer 36

v=rw