I need help with a Dynamics problem so that I can go to bed...

The problem is as follows: Using a forked rod, a 0.7-kg smooth peg P is forced to move along the vertical slotted path r = (0.5 θ) m, where θ is in radians. The angular position of the arm is θ = (π8t2) rad where t is in seconds. The peg is in contact with only one edge of the rod and slot at any instant. Determine the magnitude of the force of the rod on the peg at the instant t = 2 s."

Question

I need help with a Dynamics problem so that I can go to bed...

The problem is as follows: Using a forked rod, a 0.7-kg smooth peg P is forced to move along the vertical slotted path r = (0.5 θ) m, where θ is in radians. The angular position of the arm is θ = (π8t2) rad where t is in seconds. The peg is in contact with only one edge of the rod and slot at any instant. Determine the magnitude of the force of the rod on the peg at the instant t = 2 s."

anonymous · Answer

Here's a picture:

anonymous · Answer

http://faculty.washington.edu/reinhall/ME230/Soultions_nonassigned/Chapter%2013.pdf perhaps look at question 13-100