Recent content by tfmfyn

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    Finding the center of mass by integration.

    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...
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    Problem involving kinetic friction and relative accelerations

    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...
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    Problem involving kinetic friction and relative accelerations

    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...
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