A pulley is attached to one arm of a balance and a strine passed around it carries two masses m, and m. The balance is counterpoised and the pulley is clamped so that m. and m, do not move. How much counter weight is to be reduced or increased to restore balance if the clamp is released. (1) gm.-m) m +m, to be increase gim-m) my+m, to be reduce gm. m) m m , - to be reduced to be red gm-m, m m , - to be increased to be in