Problem 1 on balancing of Reciprocating masses in single cylinder engine ( Partial balancing )

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Solve Problem on Partial balancing of primary unbalanced force in Reciprocating engine.

A single cylinder Reciprocating engine runs at 300 rpm and has a stroke length of 250 mm. The mass of Reciprocating parts is 40 kg and the mass of revolving parts at 125 mm radius is 28 kg. If only 2/3rd of the Reciprocating parts and all the revolving parts are to be balanced, find the following :
1. Balancing mass required at a radius of 350 mm
2. Resultant / residual unbalanced force in magnitude and direction when the crank has turned 45°from IDC

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Ma'am please make a video on balancing of single cylinder engine. And mcqs also need

Bittu_knk