The “Vomit Comet.” In microgravity astronaut training and equipment testing, NASA flies a KC135A aircraft along a parabolic flight path. As shown in Figure P4.59, the aircraft climbs from 24 000 ft to 31 000 ft, where it enters a parabolic path with a velocity of 143 m/s nose high at 45.0° and exits with velocity 143 m/s at 45.0° nose low. During this portion of the flight, the aircraft and objects inside its padded cabin are in free fall; astronauts and equipment float freely as if there were no gravity. What are the aircraft’s (a) speed and (b) altitude at the top of the maneuver? (c) What is the time interval spent in microgravity?
The “Vomit Comet.” In microgravity astronaut training and equipment testing, NASA flies a KC135A aircraft along a parabolic flight path. As shown in Figure P4.59, the aircraft climbs from 24 000 ft to 31 000 ft, where it enters a parabolic path with a velocity of 143 m/s nose high at 45.0° and exits with velocity 143 m/s at 45.0° nose low. During this portion of the flight, the aircraft and objects inside its padded cabin are in free fall; astronauts and equipment float freely as if there were no gravity. What are the aircraft’s (a) speed and (b) altitude at the top of the maneuver? (c) What is the time interval spent in microgravity?
Solution Summary: The author explains the speed of the aircraft and the altitude at the top of a maneuver.
The “Vomit Comet.” In microgravity astronaut training and equipment testing, NASA flies a KC135A aircraft along a parabolic flight path. As shown in Figure P4.59, the aircraft climbs from 24 000 ft to 31 000 ft, where
it enters a parabolic path with a velocity of 143 m/s nose high at 45.0° and exits with velocity 143 m/s at 45.0° nose low. During this portion of the flight, the aircraft and objects inside its padded cabin are in free fall; astronauts and equipment float freely as if there were no gravity. What are the aircraft’s (a) speed and (b) altitude at the top of the maneuver? (c) What is the time interval spent in microgravity?
You built a pinball machine that has a banked circular track with radius 0.34 m. The
ball shooter launches the ball directly into this circular track before the ball enters
into the game. You fire pin balls at a constant speed into the track and adjust the
banking angle until it works. The banking angle is 21 degrees. Assume your pin ball
machine is on a horizontal plane, how fast is the ball launched into the track, in m/s?
Hint: I have a video on this problem about swing pendulum but the results are very
similar, except a string length was given instead of path radius and tension was
present instead of normal force. Assume friction is negligible.
Q7: An artillery shell is fired with an initial velocity of 300 m/s at 55.0°
above the
horizontal. It explodes on a mountainside 42.0 s after firing. What are
the x and y
coordinates of the shell where it explodes, relative to its firing point?
Q8: A student attaches a ball to the end of a string 0.6 m in length and
then swings
the ball in a vertical circle. The speed of the ball is 4.30 m/s at its
highest point and
6.50 m/s at its lowest point. Find the acceleration of the ball when the
string is
vertical and the ball is at (a) its highest point and (b) its lowest point.
Q9: Determine the stopping distance for a skier moving down a slope
with friction
with an initial speed of 20.0 m/s. Assume kinetic friction to be 0.18 and
e = 5.0°.
I have the answers up to G. I do not know what to do at that point
Assume you launch a projectile very close to the left edge of the building. It has a height of 500 meters. It follows a parabolic trajectory and just barely misses the right edge of the building and keeps falling to the ground. If the initial velocity is 26 m/s at an angle of 40° with respect to the top of the building what is:
a) the x and y components of the initial velocity?
b) the maximum height the projectile reaches?
c) the time it takes to reach this height?
d) the length of time the projectile is over the building?
e) the approximate length of the building?
f) the velocity and angle the projectile is just as it passes the edge of the building?
g) the time it takes for the projectile to hit the ground after it misses the building?
h) the x distance the projectile has traveled from the right edge of the building?
i) the x component of the velocity vector right before it hits the ground?
j) the y component of…
Chapter 4 Solutions
Physics for Scientists and Engineers, Technology Update (No access codes included)
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