Effort The diagram shows a lever of uniform mass supported at
the middle point. Six coins of equal mass are placed at
mark A on the left hand side.
А
B
(a) Can you balance the lever with 12 more coins of
equal mass? If yes, where would you place them? If
not why?
(b) With six coins still on the left, three coins are put on the right at mark B. Where on
the right should you pile an addition of six coins to get a balance?​