2. The door to a castle is 3 m high by 2 m wide, with a...

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2. The door to a castle is 3 m high by 2 m wide, with a mass of 100 kg. It has an iron door knob with mass 10 kg, 1.75 m from the hinge. The door is closed, but you pull on the doorknob with 100N of force at an angle 15 from the perpendicular. The knob is on the right and the hinge on the left when you pull the door open. A) What is the moment of inertia of the door? (You can treat the knob as a point mass.) B) How much torque do you give the door? C) What is the direction of the torque? D) What angular acceleration have you given the door? 2. The door to a castle is 3 m high by 2 m wide, with a mass of 100 kg. It has an iron door knob with mass 10 kg, 1.75 m from the hinge. The door is closed, but you pull on the doorknob with 100N of force at an angle 15 from the perpendicular. The knob is on the right and the hinge on the left when you pull the door open. A) What is the moment of inertia of the door? (You can treat the knob as a point mass.) B) How much torque do you give the door? C) What is the direction of the torque? D) What angular acceleration have you given the door?