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Determine the maximum and minimum values of the primary and secondary unbalanced forces due to reciprocating masses for a 90° V-twin engine, whose details are given below:

Reciprocating mass per cylinder = 2.0 kg,

Stroke for each cylinder = 12 cm ,

Connecting rod length of each cylinder = 20 cm ,  Crank shaft speed = 200

Indicate the crank positions corresponding to above maximum and minimum values of unbalance forces.  Whether primary and secondary unbalance forces can be balanced completely or not ?

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