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# Design a cam to raise a valve with simple harmonic motion through 50 mm in 13 of a revolution keep if fully raised through 112 revolution and to lower it with harmonic motion in 16 revolution The

Design a cam to raise a valve with simple harmonic motion through 50 mm in 1/3 of a revolution,
keep if fully raised through 1/12 revolution and to lower it with harmonic motion in 1/6 revolution.
The valve remains closed during the rest of the revolution. The diameter of the roller is 20 mm and
the minimum radius of the cam is 25 mm. The diameter of the camshaft is 25 mm. The axis of the
valve rod passes through the axis of the camshaft. If the camshaft rotates at uniform speed of 100
r.p.m. ; find the maximum velocity and acceleration of a valve during raising and lowering.
[ Ans. 0.39 m/s, 0.78 m/s ; 6.17 m/s2, 24.67 m/s2]

Jun 21 2020 View more View Less