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A metal bar 70 cm long and 4.00 kg in ma...

A metal bar 70 cm long and 4.00 kg in mass supported on two knife-edges placed 10 cm from each end . A 6.00 kg load is suspended at 30 cm from one end. Find the reactions at the knife-edges. (Assume the bar to be of uniform cross section and homogeneous.)

A

`8 kg`

B

`10 kg`

C

`12 kg`

D

`16 kg`

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