Homework H5.E - Fa22

Problem statement
Solution video

DISCUSSION THREAD

Any questions??


Four-step plan:

Step 1 - FBD: Draw a free body diagram of the bar.

Step 2 - Kinetics: Write down the Newton/Euler equations for the sphere. Since there is no fixed point on the bar, choose the center of mass for your moment equation

Step 3 - Use the rigid body kinematics equation for relating the accelerations of points A and B on the bar:

aB = aA + α x rB/A - ω2 rB/A 

followed by relating the acceleration of B to the acceleration of the bar's center of mass, G:

aG = aB + α x rG/B - ω2 rG/B 

Step 4 - Solve

 

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