End B of the uniform 2.7kg bar AB is connected to a small roller that moves in a

ID: 1857127 • Letter: E

Question

End B of the uniform 2.7kg bar AB is

connected to a small roller that moves in a

horizontal slot. The other end of the bar is pinned

to the homogeneous 1.8 kg disk that rolls without

slipping on the vertical surface. The spring

attached to A has a free length of 0.3 m and a

stiffness k of 58 N/m. After the system is released

from the rest from the position shown, the

velocity of A is 3m/s when AB becomes horizontal.

Applying the work-energy method, determine the

magnitude of the constant force P that acts on the

bar at B.

Please show as much work as possible, i am really struggling with this problem. Thank you

now this could be done by

Wp+Wsp+wgravity=change in kinetic energy

P*x-k*(xf^2-xi^2)/2+(Wg for disc +rod)=(I+m)*v^2/2

everything can be obtained by the fiqure or is given except P

get P from this equation

Happy to help

can solve this completely for you

but pls rate me first

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