- #1

joemama69

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## Homework Statement

See attachment

The door has a weight of 200lb and a center of gravity at G. Determine the constant force F that must be applied to the door to push it open 12ft to the right in 5 sec. starting from rest. Also, find the vertical reactions at the rollers A and B.

## Homework Equations

F=ma

## The Attempt at a Solution

200lb --> m = 6.21619 slug

F(x) = 6.21619a

F(y) = N(ab) - 6.21619(32.2) = 0, N(ab) = 200.161318 N

Moment @ G = F(2ft) - N(a)(6ft) + N(b)(6ft) = 0

N(a) + N(b) = 200.161318

Not sure where to go from here