Grade upto college level Electric Current
A block of weight W produces an extension of 9cm when it is hung by an elastic spring of length 60cm and is in equlbrm.The spring is cut into 2 parts , one of length 40cm and the other 20cm they are connected in parallel.The same load W hangs in equlbrmsupported by both. The extension now is
a) 9cm b)6cm c) 3cm d)2cm
plzz give the full method rates assured
A block of weight W produces an extension of 9cm when it is hung by an elastic spring of length 60cm and is in equlbrm.The spring is cut into 2 parts , one of length 40cm and the other 20cm they are connected in parallel.The same load W hangs in equlbrmsupported by both. The extension now is
a) 9cm b)6cm c) 3cm d)2cm
plzz give the full method rates assured
