Asked by Lala
.A uniform metre rule balances horizontally on a knife edge placed at the 58 cm mark when a weight of 20gf is suspended from one end. what is the weight of the rule? *
Answers
Answered by
oobleck
The mass of the rule acts at the 50cm mark (8cm from the fulcrum), so
8m = 20*42
m = 105g
8m = 20*42
m = 105g
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