Piston diameter = 0.24 m, length of stroke = 0.6 m, length of connecting rod = 1.5 m, mass of reciprocating parts = 300 kg, mass of connecting rod = 250 kg; speed of rotation = 125 r.p.m; centre of gravity of connecting rod from crank pin = 0.5 m ; Kg of the connecting rod about an axis through the centre of gravity = 0.65 mFind the equivalent length L of a simple pendulum swung about an axis.

• A. 1.35 m
• B. 1.42 m
• C. 1.48 m
• D. 1.50 m