SOLUTION: ] A pendulum of length 7 inches is attached at one end to the ceiling, and has a mass attached to the other end. If the mass is lifted to the ceiling and then released, how far is

Algebra ->  Trigonometry-basics -> SOLUTION: ] A pendulum of length 7 inches is attached at one end to the ceiling, and has a mass attached to the other end. If the mass is lifted to the ceiling and then released, how far is      Log On


   

Question 757131: ] A pendulum of length 7 inches is attached at one end to the ceiling, and has a mass attached to the other end. If the mass is lifted to the ceiling and then released, how far is the mass from the ceiling the instant it has traveled an arclength of 12 inches?
Answer by KMST(5328) About Me  (Show Source):
You can put this solution on YOUR website!
An arc length of 12 inches, along a circle of radius 7 inches has a measure (in radians) of
7inches%2F12inches=7%2F12
The distance from the ceiling will be
%287inch%29%2Asin%287%2F12%29=3.86inch (approximately)