You are on a cruise ship to the Bahamas. The door to your room faces the...

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You are on a cruise ship to the Bahamas. The door to your room faces the outside of the ship, and swings inwards to your room. On a breezy day you notice that after turning the door knob, it is very difficult to pull the door open (legend has it, this happened to the mother of a friend of your instructor's cousin's dog's grand- pa's owner). The wind is blowing steadily parallel Wind Direction to the side of the ship. The wind is not at all directed into the door! (a) What is the origin of the force preventing you from opening the door? Explain why the wind is making it difficult to open the door. Hint: if your door opened swinging outwards, it would be initially easy to open! (b) Your door is 1.00 meters wide and 1.93 meters tall. The door handle is 87.5 cm from the door hinges. If you have to exert a force of 45 lbs to start to open the door, how fast is the wind travelling outside your door? You may assume the force discussed in part (a) acts at the center of the door. Give the speed both in m/s and m/hr. You are on a cruise ship to the Bahamas. The door to your room faces the outside of the ship, and swings inwards to your room. On a breezy day you notice that after turning the door knob, it is very difficult to pull the door open (legend has it, this happened to the mother of a friend of your instructor's cousin's dog's grand- pa's owner). The wind is blowing steadily parallel Wind Direction to the side of the ship. The wind is not at all directed into the door! (a) What is the origin of the force preventing you from opening the door? Explain why the wind is making it difficult to open the door. Hint: if your door opened swinging outwards, it would be initially easy to open! (b) Your door is 1.00 meters wide and 1.93 meters tall. The door handle is 87.5 cm from the door hinges. If you have to exert a force of 45 lbs to start to open the door, how fast is the wind travelling outside your door? You may assume the force discussed in part (a) acts at the center of the door. Give the speed both in m/s and m/hr.

Answer rating: 100% (QA)

a The origin of the force preventing you from opening the door is the difference in air pressure on either side of the door When the wind blows parall... View the full answer