Dyanmics 4 bar linkage The figure below depicts a slider cr

Dyanmics - 4 bar linkage

The figure below depicts a slider crank mechanism. Link lengths [cm], angles [degrees] and input angular velocity [rad./sec.] for this mechanism are given in the table below. NB: Graphical solutions for this problem is NOT permitted. (a) Analytically calculate for open circuit, the link length d and the link angle theta_3. (b) Determine the velocity (magnitude and direction) of the pin joints A and B. (c) Determine the accelerations of the pin joints A and B.

Solution

The loaded four wheel trailer shown in Figure P8.10 has a total mass of 5t and is pulled along a level road. Average resistance to motion (friction and windage) is 2 per cent of the total weight and acts at the same horizontal level as the applied force P. Determine the normal reaction at each of the front and rear wheels when the trailer moves:

a) at constant velocity

b) with forward acceleration 1.5m/s².

(Average resistance to motion is 2% of total weight is not required.)