Question

in uniform circular motion, the speed v of point on the edge of a spinning disk is v=2π/T times r. where r is the radius of the disk and T is the time it takes the point to travel once around the circle. Solve the formula for r.

Answer 1

\[v=\frac{2\pi r}{T}\]\[vT=2\pi r\]\[r=\frac{vT}{2\pi}\]

Answer 2

steps?

Answer 3

step 1: multiply both sides of the equation by T
step 2: divide both sides of the equation by 2pi