Recent content by phyhelpme

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    Calculating Angular Speed of a Merry-Go-Round After Adding a Child

    I think this now is the correct answer. Final moment of inertial (if)= 250kgm^2+(35kg)(2m)^2=390kgm^2 IiWi=IfWf (250)(15)=390wf 3750=390wf = 9.62 rev/min
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    Calculating Net Gravitational Force Between Multiple Objects

    If it was a snake it would have bitten me. So G is 6.674 x 10^-11N (m/kg)^2 correct? That would mean my equation is: F= 6.674 x 10^-11(50.0kg)(500kg-200kg)/0.25m^2 =1.60176 x 10^-5N toward 500kg?
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    Calculating Angular Speed of a Merry-Go-Round After Adding a Child

    How does this look? Ok so moment of intertia =35kg(2^2)=140 15rev/m*pi/30=1.57 rad/s Linitial=Lfinal Linitial=I*angular speed 250(1.57)=263.12w 392.5=263.12w 1.49 rad/s=w Converting back to rev/min: (1.49*60)/2pi=14.23 rev/min
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    Calculating Net Gravitational Force Between Multiple Objects

    I have: F= Gm1m2/r^2 F= G(50.0kg)(500kg-200kg)/0.25m^2 =240000N toward 500kg I feel that I have it setup right but for some reason when I calculate I get 2400000 which seems wrong to me.
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    Calculating Net Gravitational Force Between Multiple Objects

    Confused :( Homework Statement A 200 kg object and a 500 kg object are separated by 0.500 m. Find the net gravitational force exerted by these objects on a 50.0 kg object placed midway between them.
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    Calculating Angular Speed of a Merry-Go-Round After Adding a Child

    What do I need to do with this problem? Homework Statement A playground merry-go-round of radius R = 2.00 m has a moment of inertia I = 250 kgm2 and is rotating at 15.0 rev/min about a frictionless vertical axle. Facing the axle, a 35.0 kg child hopes onto the merry-go-round. What is...
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