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    Circle with radius r.
    Mass is attached to one end of a rod and other end centre of circle.
    Rod turns an angle theta from the bottom of the circle.

    So if the circle has ... never mind I got it.
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    (Original post by AlmostNotable)
    Circle with radius r.
    Mass is attached to one end of a rod and other end centre of circle.
    Rod turns an angle theta from the bottom of the circle.

    Resolving to find Tension I can get Tcos(theta)=mg and T=mgcos(theta)

    Which is right and why?
    I can't quite get what you're asking, but:



    Means that if you resolve radially inwards, you get: T - mg\cos \theta = F_c where F_c is the centripetal force.
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    (Original post by Zacken)
    I can't quite get what you're asking, but:



    Means that if you resolve radially inwards, you get: T - mg\cos \theta = F_c where F_c is the centripetal force.
    Do we need to know how to find escape velocity for M3?
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    (Original post by AlmostNotable)
    Do we need to know how to find escape velocity for M3?
    Nope.
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    Whut...?

    Edit: Seems you got it
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    (Original post by Zacken)
    Nope.
    Why did I revise that then?
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    (Original post by AlmostNotable)
    Why did I revise that then?
    I dunno, you need to know it for U5 Edexcel physics.
 
 
 
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