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Question 2 A 4-link quick return mechanism is shown in the figure. r1=50 cm, r2=25 cm, l=80 cm, and input link, AoC, is rotating with a constant angular velocity of ? = ? = 4 rad/s. a) Perform the kinematic analysis analytically for the generalized coordinate of ?=60°. Find the positions and the velocities of the links 3 and 4. b) Write the scaler loop equations. c) Obtain $\dot{s}$, $\ddot{s}$, $\dot{\theta}$, $\ddot{\theta}$ by performing velocity and acceleration analyzes numerically for the positions calculated in (a). d) Calculate the velocity coefficient and the velocity of the point D.

          Question 2 A 4-link quick return mechanism is shown in the figure.
r1=50 cm, r2=25 cm, l=80 cm, and input link, AoC, is rotating with a
constant angular velocity of ? = ? = 4 rad/s.
a) Perform the kinematic analysis analytically for the generalized
coordinate of ?=60°. Find the positions and the velocities of the
links 3 and 4.
b) Write the scaler loop equations.
c) Obtain $\dot{s}$, $\ddot{s}$, $\dot{\theta}$, $\ddot{\theta}$ by performing velocity and acceleration analyzes
numerically for the positions calculated in (a).
d) Calculate the velocity coefficient and the velocity of the point D.

Question 2 A 4-link quick return mechanism is shown in the figure.
r1=50 cm, r2=25 cm, l=80 cm, and input link, AoC, is rotating with a
constant angular velocity of ? = ? = 4 rad/s.
a) Perform the kinematic analysis analytically for the generalized
coordinate of ?=60°. Find the positions and the velocities of the
links 3 and 4.
b) Write the scaler loop equations.
c) Obtain ṡ, s̈, θ̇, θ̈ by performing velocity and acceleration analyzes
numerically for the positions calculated in (a).
d) Calculate the velocity coefficient and the velocity of the point D.

Added by Christine L.

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