Equation to measure pressure angle - Theory of Machines - 2

Q.  Which of the following equation is used to measure pressure angle between direction of follower motion and force exerted by the cam on follower when eccentricity is zero?

rb = base circle radius
y = displacement of follower

- Published on 07 Aug 15

a. cot Φ = (dy /dθ) / ( rb + y)
b. tan Φ = (dy /dθ) / ( rb + y)
c. tan Φ = (dy /dθ) x ( rb + y)
d. cot Φ = (dy /dθ) x ( rb + y)

ANSWER: tan Φ = (dy /dθ) / ( rb + y)

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