Physics for Scientists and Engineers
6th Edition
ISBN: 9781429281843
Author: Tipler
Publisher: MAC HIGHER
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Chapter 9, Problem 7P
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While sunbathing on the balcony of your 3rd floor apartment, you notice someone drop a m = 6.5 kg pumpkin from rest from the roof of the 5-story building across the street. Since you just completed a course on surveying, you know that the two identical buildings are d = 29 m apart, and have floors that are h = 4.8 m tall. The first floor is at ground level, as shown.
a) Determine the magnitude of the angular momentum of the pumpkin, in kgm^2/s, by you as it passes the fourth floor balcony of the other building.
b) Same question but with the 3rd floor, directly across from you.
c) Same question but as it passes the second floor.
d) Same question but immediately before it hits the ground.
I was not given the radius of the pumpkin so I need to find the magnitude of the angular momentums without r.
While sunbathing on the balcony of your 3rd floor apartment, you notice someone drop a m = 6.5 kg pumpkin from rest from the roof of the 5-story building across the street. Since you just completed a course on surveying, you know that the two identical buildings are d = 29 m apart, and have floors that are h = 4.8 m tall. The first floor is at ground level, as shown.
a) Determine the magnitude of the angular momentum of the pumpkin, in kgm^2/s, by you as it passes the fourth floor balcony of the other building.
b) Same question but with the 3rd floor, directly across from you.
c) Same question but as it passes the second floor.
d) Same question but immediately before it hits the ground.
A bullet of mass 10 g and speed 500 m/s is fired into a door and gets embedded exactly at the centre of the door. The door is 1.0 m wide and weighs 12 kg. It is hinged at one end and rotates about a vertical axis practically without friction. Find the angular speed of the door just after the bullet embeds into it. (Hint: The moment of inertia of the door about the vertical axis at one end is ML2/3.)
Chapter 9 Solutions
Physics for Scientists and Engineers
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