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  1. G

    Physics: Post your doubts here!

    now that you have got B, you can make B the pivoting point and calculate A.. 1.2 x A = 0.75 x 2.4 A = 1.5 N and this shows that the upward forces add up to 2.4 N. And proves that the rod is in equilibrium, and becuz of that you can take moments around any point.
  2. G

    Physics: Post your doubts here!

    we are going to calculate moments about a point it can be any point, because the forces on A and B are unknown and the force on the midpoint (weight) is known. we will take moments around an unknown point, lets take A as the pivoting point >> to calculate the Force (tension) on B. distance of...
  3. G

    Biology Paper 22!! HOW WAS IT??

    yup just saw :P
  4. G

    Biology Paper 22!! HOW WAS IT??

    how was ur paper...easy? hard?...predict a few thresholds :D And remember not to discuss the paper before 24 hours! Good Luck for the rest (y)
  5. G

    Physics: Post your doubts here!

    this is what the mark scheme says: correct phase (ignore lead/lag, look at x-axis only and allow ±½ square) see so you can either show it ahead by 60 degrees or behind. = )
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