Q. The acceleration of the reciprocating roller follower when it has contact with the straight flanks of the tangent cam, is given by

• (A) ω 2 ( r 1 r 2 )(1− cos 2 θ)
• (B) ω 2 ( r 1 + r 2 )(1+ cos 2 θ)
• (C) ω 2 ( r 1 + r 2 )( 2− cos 2 θ cos 3 θ )
• (D) ω 2 ( r 1 − r 2 )(1− sin 2 θ)