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a half meter ruler is pivoted at its midpoint and balances whaen a weight of 20N is placed at the 10 cm mark and a weight W is placed at the 45 cm mark on the ruleer. Calculate the weight W
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34 votes
34 votes
a half meter ruler is pivoted at its midpoint and balances whaen a weight of 20N is placed at the 10 cm mark and a weight W is placed at the 45 cm mark on the ruleer. Calculate the weight W

User Yasirmturk
by
2.7k points

1 Answer

22 votes
22 votes

Answer:

W = 15 N

Step-by-step explanation:

The moments from the center mus be equal for balance to occur

center is at 25 cm ( for a 1/2 meter stick)

moment one : 15 cm * 20 N

moment two : 20 cm * W these must be equal

15 * 20 = 20 * W W = 15 N

User Victor Oliveira
by
2.8k points
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