QUESTION 1: A 54.0-kg ice skater is moving at 4.10 m/s when she grabs the loose...
QUESTION 1:
A 54.0-kg ice skater is moving at 4.10 m/s when she grabs the loose end of a rope, the opposite end of which is tied to a pole. She then moves in a circle of radius 0.820 m around the pole.
(a) Determine the magnitude of the force exerted by the
horizontal rope on her arms.
kN
(b) Compare this force with her weight.
| Frope |
| W |
QUESTION 2:
Human centrifuges are used to train military pilots and astronauts in preparation for high-g maneuvers. A trained, fit person wearing a g-suit can withstand accelerations up to about 9g (88.2 m/s2) without losing consciousness.
(a)
If a human centrifuge has a radius of 4.23 m, what angular speed (in rad/s) results in a centripetal acceleration of 9g?
rad/s
(b)
What linear speed (in m/s) would a person in the centrifuge have at this acceleration?
m/s
Homework Answers
Add Answer to:
QUESTION 1:
A 54.0-kg ice skater is moving at 4.10 m/s when she grabs the
loose...
Human centrifuges are used to train military pilots and astronauts in preparation for high-g maneuvers. A...
Human centrifuges are used to train military pilots and astronauts in preparation for high-g maneuvers. A trained, fit person wearing a g-suit can withstand accelerations up to about 9g (88.2 m/s2) without losing consciousness. (a) If a human centrifuge has a radius of 3.82 m, what angular speed (in rad/s) results in a centripetal acceleration of 9g? _______rad/s (b) What linear speed (in m/s) would a person in the centrifuge have at this acceleration? ________m/s
Type or paste question here Human centrifuges are used to train military pilots and astronauts in...
Type or paste question here
Human centrifuges are used to train military pilots and astronauts in preparation for high-g maneuvers. A trained, fit person wearing a g-suit can withstand accelerations up to about 9g (88.2 m/s2) without losing consciousness. HINT Apply the expression for the centripetal acceleration, expressed in terms of the angular speed, w. Click the hint button again to remove this hint. (a) If a human centrifuge has a radius of 4.88 m, what angular speed (in rad/s)...
A 64.0-kg ice skater is moving at 3.99 m/s when she grabs the loose end of...
A 64.0-kg ice skater is moving at 3.99 m/s when she grabs the loose end of a rope, the opposite end of which is tied to a pole. She then moves in a circle of radius 0.790 m around the pole. (a) Determine the magnitude of the force exerted by the horizontal rope on her arms. kN (b) Compare this force with her weight. Frope W =
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An ice skater of mass m = 60 kg coasts at a speed of v = 0.71 m/s past a pole
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Type or paste question here
Human centrifuges are used to train military pilots and astronauts in preparation for high-g maneuvers. A trained, fit person wearing a g-suit can withstand accelerations up to about 9g (88.2 m/s2) without losing consciousness. HINT Apply the expression for the centripetal acceleration, expressed in terms of the angular speed, w. Click the hint button again to remove this hint. (a) If a human centrifuge has a radius of 4.88 m, what angular speed (in rad/s)...
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her friend Darcy. Wilhelmina is having a discussion with Darcy and
is trying to relate her skating experience to the discussions in
class about rotational kinetic energy and angular momentum.
Darcy reminds Wilhelmina that the instantaneous angular momentum,
, of a particle
relative to an axis through an origin O is defined by the
cross product of the particle's instantaneous position vector
relative to O, , and its...
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