One end of a rope is tied to the handle of a horizontally-oriented and uniform door. a force f is applied to the other end of the rope as shown in the drawing. the door has a weight of 145 n and is hinged on the right. what is the maximum magnitude of f at which the door will remain at rest? hint: use the rotational equilibrium condition. include the weight of the door into the equation.

For rotational equilibrium of the door we can say that torque due to weight of the door must be counter balanced by the torque of external force

here weight will act at mid point of door so its distance is half of the total distance where force is applied

here we know that

now we will have

so our applied force is 72.5 N

all of the answers are correct.

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explanation:

measure their densities same density, same sub