Question 7.1: Two children are playing with a door. Kerry tries to open it...
Two children are playing with a door. Kerry tries to open it by pulling on the handle with a force 50 N at right angles to the plane of the door, at a distance 0.8 m from the hinges. Peter pushes at a point 0.6 m from the hinges, also at right angles to the door and with sufficient force just to stop Kerry opening it.
i) What is the moment of Kerry’s force about the hinges?
ii) With what force does Peter push?
iii) Describe the resultant force on the hinges.
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