Determine the mass of the bar
A uniform bar of unknown mass consists of length 40 cm. If a mass of 1 kg is suspended from one end of the bar, the system will balance at a point 15 cm from the end. Determine the mass of the bar?
i) 4 kg
ii) 3 kg
iii) 2 kg
iv) 1/2 kg
v) 1/3 kg
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