circumference = 2 pi R
time in seconds
= distance / speed = 2 pi (1.3) /14.7
A 0.45-kg ball, attached to the end of a horizontal cord, is rotated in a circle of radius 1.3-m on a frictionless horizontal surface.
If the maximum speed of the ball is 14.7 m/s, how long does it take the ball to make on rotation if it is moving at its maximum speed?
3 answers
Ohhhhhhh...
so we use the CIRCUMFERENCE, not the RADIUS. Got it. Thank you so much!
so we use the CIRCUMFERENCE, not the RADIUS. Got it. Thank you so much!
Yes, unless it makes a wild plunge for the center of the circle :)
1 answer