circular motion

Question 1

where is the direction of velocity at any giving moment

Answer 1

tangent to the circle

Question 2

where is acceleration always towards

Answer 2

the center

Question 3

describe on circular motion is different to other dynamics

Answer 3

even though the speed is constant, it will always e accelerating towards the center, and velocity is always changing

Question 4

what is centripetal force

Answer 4

the net force taht accelerates an object towards the center of its circular path

Question 5

how is circular motion on vertical circle different

Answer 5

at the top of the arc it is Winner+Winner ( Fg+Ft)
at the bottom Winner-Loser ( Ft-Fg)

tension at the top =0
at the top it is in freefall, only gravity working on it

Question 6

what equation can you use when finding minimum speed of an object undergoing going constant speed at the top of its arc

Answer 6

V=/r*g

Question 7

explain why centrifugal force doesnt exist

Answer 7

it is simply the apparent force that causes a rotating object to move in a straight line. in reality what we feel is inertia ( the ability to resist change)