circular motion

Question 1

uniform circular motion

Answer 1

direction changes at every point but speed in constant

Question 2

time for 1 rotation is represented in?

Answer 2

periods T (s)

Question 3

Vtan =

Answer 3

2(pi)r/T (m/s)

Question 4

frequency

Answer 4

number of revolutions per second
f= rev/ sec = 1 Hertz

Question 5

The relationship between frequency and period is?

Answer 5

inverse
f= 1/T
T= 1/f

Question 6

centripetal force

Answer 6

“center seeking”
direction of force towards the center

Question 7

centripetal acceleration

Answer 7

the acceleration towards the center
Ac= v^2/r

Question 8

changes in direction of objects velocity vector

Answer 8

Fc= mc (v^2/r)

Question 9

FBD in circular motion

Answer 9

Fc does not go on FBD
-Ft, Fg, Ff start at the object and point towards the center

Question 10

for an object to be in uniform circular motion there must be?

Answer 10

a net force acting on it

Question 11

centripetal force

Answer 11

is a net force

Question 12

with vertical circles toward the center is…

Answer 12

positive

Question 13

What must be acting on an object in order for it to be in circular motion?

Answer 13

There must be a force acting on an object for it to be in circular motion

Question 14

The centripetal force is a?

Answer 14

net force

Question 15

With verticle circles which way is positive?

Answer 15

Towards the center in positive

Question 16

Newtons Laws of Universal Gravitation

Answer 16

1. gravitational force is a field force between two particles
2. force varies as the inverse square of the distance
3. force is proportional to mass of objects, gravity force acts form the center of the object
4. gravity is always an attractive force

Question 17

Equation for Force of Universal Gravitation

Answer 17

F = G m1m2/r^2

Question 18

Value of G?

Answer 18

6.67 x 10 ^-11

Question 19

In the universal gravitation equation what is r?

Answer 19

r is equal to the distance between the center of mass 1 to the center of mass 2

Question 20

acceleration due to gravity (g) equation?

Answer 20

g = G m2/r^2

Question 21

How to find velocity of a satelite in orbit?

Answer 21

F univ. g = Fc
solve
Vtan = sq. rt Gm2/r