physics
posted by can't understand the question...help!!! .
A door, essentially a uniform rectangle of height 2.00 m, width 0.78 m, and weight 136.0 N, is supported at one edge by two hinges, one 18.1 cm above the bottom of the door and one 181.9 cm above the bottom of the door. Calculate the horizontal components of the forces on the two hinges.
lower hinge magnitude
upper hinge magnitude
d

physics 
bobpursley
I wish I understand what you think you don't know.
the door has a center of gravity.
You can label each hing with a horizontal force, and a vertical force.
Then, write three equations
Sum of horizontal forces=0
sum of vertical forces=0
sum of moments about any point is zero
so with those equations, you get the forces on each hings. All it is looking for is horizontal force (note: the two hinges will be equal and opposite horizontal forces.
Respond to this Question
Similar Questions

physics
A student opens a 12.0 kg door If the door is 2.00 m in height and 1.00 m wide what is the moment of inertia of the door about its hinges. The equation for moment of inertia about the hinges is I =1/3 mr^2 should i use the the width … 
physics
A 0.005kg bullet traveling horizontally with a speed of 1.00 103 m/s enters an 20.3kg door, imbedding itself 10.6 cm from the side opposite the hinges as in the figure below. The 1.00mwide door is free to swing on its hinges. (c) … 
physiC
A uniform door (0.81 m wide and 2.1 m high) weighs 150 N and is hung on two hinges that fasten the long left side of the door to a vertical wall. The hinges are 1.9 m apart. Assume that the lower hinge bears all the weight of the door. … 
physics
A door, essentially a uniform rectangle of height 2.00 m, width 0.78 m, and weight 136.0 N, is supported at one edge by two hinges, one 18.1 cm above the bottom of the door and one 181.9 cm above the bottom of the door. Calculate the … 
Physics
A uniform 22 kg door that is 2.5 m high by 0.80 m wide is hung from two hinges that are 20 cm from the top and 20 cm from the bottom. If each hinge supports half the weight of the door, find the magnitude and direction of the horizontal … 
physics
A door has mass M, width W, and height H. It is attached to a door frame by only two hinges: one at 5H/6 (the top hinge) and one at H/6 (the bottom hinge). Calculate the force that the door frame exerts on each hinge. 
Physics: Rotational Motion
A 0.005kg bullet travelling horizontally with a speed of 1000m/s enters an 18kg door, embedding itself 10cm from the side opposite the hinges as in figure. The 1m wide door is free to swing on the hinges. a) Before it hits the door, … 
Physics
A 46.4N force is applied to the outer edge of a door of width 1.26 m in such a way that it acts (a) perpendicular to the door (b) at an angle of 43.0 degrees with respect to the door surface, (c) so that the line of action of the … 
Math
Henry is building a front door. The height of the door is one foot more than twice its width. If the door is seven feet high, what is its width? 
Physics
A person pushes on a doorknob with a force of 5N. The direction of the force is at an angle of 20 degrees from the perpendicular to the surface of the door. The doorknob is located .800m from axis of the hinges of the door. The door …