circular motion

Question 1

state, in terms of force, the conditions necessary for an object to move in a circular path at a constant speed

Answer 1

the overall force acting on the object must be perpendicular to the velocity. the force my act toward the center.

Question 2

how many radians in a circle?

Answer 2

2π

Question 3

what is the value of π in degrees

Answer 3

180

Question 4

what is centripetal force

Answer 4

is the resultant force on an object, acting towards the centre of the circle, causing it to move in a circular path

Question 5

what is the conical pendulum

Answer 5

a mass suspended by a string at an angle to the horizontal and traces a circular path of R

Question 6

explain why the stars of equal mass must always be diametrically opposite as they travel in the circular orbit

Answer 6

centripetal force provided by gravitational force. Force is along line joining stars which must therefore be diameter of circle.