- #1
gcombina
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Homework Statement
A grindstone, initially at rest, is given a constant angular acceleration so that it makes 20.0 rev in the first 8.00 s. What is its angular acceleration?
(a) 0.313 rad/s2 (c) 2.50 rad/s2 (e) 3.93 rad/s2
(b) 0.625 rad/s2 (d) 1.97 rad/s2
Homework Equations
The Attempt at a Solution
#1. I am changing the rev part to radians
20rev = 125.66
#2. I am using the formula
w^2 = w^2 + 2 alpha tetha (where are the symbols?)