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    A non-uniform beam PQ of length 4 m and weight 400 N is held horizontally by
    smooth supports at R and S where PR = SQ = 1 m. A boy of weight 500 N can
    just stand at end P without the beam overturning.
    (i) Find the position of the centre of mass of the beam
    (ii) The boy walks towards Q. Find his distance from Q when the beam is about
    to tip.

    where it says "A boy of weight 500 N can
    just stand at end P without the beam overturning." am i supposed to assume the beam is on the point of tilting?
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    (Original post by joyoustele)
    where it says "A boy of weight 500 N can
    just stand at end P without the beam overturning." am i supposed to assume the beam is on the point of tilting?
    Yes that's right.
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    (Original post by Notnek)
    Yes that's right.
    Okay. Thanks.
 
 
 
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