Question

A uniform have metre rule,pivoted at 20cm mark balances horizontally when a mass of 50g is suspended from 4cm mark calculate the mass of the metre rule.
summing moments about the 20 cm mark, and assuming the mass of the rule is at the 50cm mark.

50g(20-4)+M(20-50)=0
M=50(16/30)
You were supposed to convert 50g to kg then find weight
What is the length of the half meter rule?


w1×m2=w2×m2
So, 16×50=30×m
M=26.6
how did you get 26.6
So what is the correct answer

YES
A uniform half metre rule, pivoted at the 20cm mark, balance horizontally when a mass of 50g is suspended from the top. Calculate the mass of the metre rule
The question is asking for the mass of the metre rule not the length.
How is 20 the length

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