The piston of an engine moves with simple harmonic motion. The crank rotates at 120 r.p.m. with a stroke of 2 meters. The velocity of the piston, when it is at a distance of 0.8 metre from the centre is.

The piston of an engine moves with simple harmonic motion. The crank r

1.	The piston of an engine moves with simple harmonic motion. The crank rotates at 120 r.p.m. with a stroke of 2 meters. The velocity of the piston, when it is at a distance of 0.8 metre from the centre is.
A.	4.8 π
B.	2.4 π
C.	1.2 π
D.	0.6 π
Answer» C. 1.2 π