Homework Statement
Show that the center of mass of a uniform semicircular disk of radius R is at a point 4R/(3(pi)) from the center of the circle. Homework Equations
Total mass Center of mass = M rcm = m1r1 + m2r2 + ...The Attempt at a Solution
I do not know how to apply integration to this...
OK, I've looked over the problem again and realized my first attempt was wrong. Here is the revision:
m1=100kg
m2=20kg
a1=6.00m/s^2
a2=4.00m/s^2
Also, I used F=Fapplied and f=Ffriction for my variables.
(a)
\SigmaFnetm2y=Fn-(m2)(g)=0
So Fn=(m2)(g)
\SigmaFnetm2x=m2a2
-fk=-\mum2g=-m2a2...
Homework Statement
I am having trouble with a problem from Physics for Scientists and Engineers by Tipler and Mosca, 6th edition, 5.56
A 100-kg mass is pulled along a frictionless surface by a horizontal force F such that its acceleration is a1=6.00m/s^2. A 20.0-kg mass slides along the top...