For a piston effort FP in a reciprocating engine (shown below), the turning moment in the crank shaft is given by
1
\(\frac{{{F_P}}}{{\cos \phi }} \times \sin \left( {\theta + \phi } \right)\)
2
\( \frac{{{F_P}}}{{\cos \phi }} \times \cos \left( {\theta + \phi } \right)\)
3
\( \frac{{{F_P}}}{{\cos \phi }} \times \sin \left( {\theta + \phi } \right)\;\times\; r \)
4
\( \frac{{{F_P}}}{{\cos \phi }} \times \cos \left( {\theta + \phi } \right)\;\times\; r \)
5
Question Not Attempted