The spring of the door latch has a constant of 1.8 lb/in. and in the position sh

Question

The spring of the door latch has a constant of 1.8 lb/in. and in the position shown exerts a 0.6-lb force on the bolt, The coefficient of static friction between the bolt and the strike plate is 0.40; all other Determine the magnitude of the force P required to start closing the door. In Prob. 8.60, determine the angle that the face of the bolt should form with the line BC if the force P required to close the door is to be the same for both the position shown and the position when B is almost at the strike plate.

Explanation / Answer

The spring of the door latch has a constant of 1.8 lb/in. and in the position sh

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