A 200-Kg Uniform Door Has a Width of 1

question 36

Short Answer

A 20.0-kg uniform door has a width of 1.20 m and a height of 2.50 m.The door is mounted on a post by a pair of hinges,marked 1 and 2 in the figure,at the top and bottom of the door.An external force of 60.0 N,at an angle of 30.0° above the horizontal,is applied to the small doorknob,as shown in the figure.The doorknob is 1.00 m above the bottom of the door.
(a)Find the x component of the force that hinge 1 exerts on the door at the top.
(b)Find the SUM of the y components of the forces that hinges 1 and 2 together exert on the door.

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