A uniform scale Is balanced that 40cm mark weight 25 gram force and 10 gram force are suspended at 5cm mark and 75cm respectively. Calculate weight of metre scale
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Answer:
balance point = b= 40
W1= 25gf at distance d1 = 5cm
W2= 10gf at distance d2 = 75cm
now the weiht of meter rod:
=W x b + w1b1 + w2b2
=W x 50 + 25 x 5 + 10 x 75
= (W+25+10)40
10W = 525
W = 52.5 gf
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