Question
In: Physics
The Earth has an angular speed of 7.272·10-5 rad/s in its rotation. Find the new angular...
The Earth has an angular speed of 7.272·10-5 rad/s in
its rotation. Find the new angular speed if an asteroid (m
= 3.91·1022 kg) hits the Earth while traveling at a
speed of 2.87·103m/s (assume the asteroid is a point
mass compared to the radius of the Earth) in each of the following
cases:
a) The asteroid hits the Earth dead center.
b) The asteroid hits the Earth nearly tangentially in the direction of Earth's rotation.
c) The asteroid hits the Earth nearly tangentially in the direction opposite of Earth's rotation.
Solutions
genius_generous answered 2 years agoRelated Solutions
The Earth has an angular speed of 7.272·10-5 rad/s in its rotation. Find the new angular...
The Earth has an angular speed of 7.272·10-5 rad/s in its
rotation. Find the new angular speed if an asteroid (m = 4.87·1022
kg) hits the Earth while traveling at a speed of 4.93·103 m/s
(assume the asteroid is a point mass compared to the radius of the
Earth) in each of the following cases:
a) The asteroid hits the Earth dead center.
b) The asteroid hits the Earth nearly tangentially in the
direction of Earth's rotation.
c) The asteroid...
a.) Calculate the angular velocity (in rad/s) of the Earth in its orbit around the sun...
a.) Calculate the angular velocity (in rad/s) of the Earth in
its orbit around the sun and that about its axis.
b.) Calculate the moment of inertia, the angular momentum, and
the rotational kinetic energies for both cases.
At t = 0, a flywheel has an angular velocity of 10 rad/s, an angular acceleration...
At t = 0, a flywheel has an angular velocity of 10 rad/s, an
angular acceleration of -0.44 rad/s2, and a reference line at ?0 =
0. (a) Through what maximum angle ?max will the reference line turn
in the positive direction? What are the (b) first and (c) second
times the reference line will be at ? = ?max/4? At what (d)
negative time and (e) positive time will the reference line be at ?
= -8.0 rad?
A wheel of radius 8 inches is rotating 15°/s. What is the linear speed v, the angular speed in RPM, and the angular speed in rad/s?
A wheel of radius 8 inches is rotating 15°/s. What is the linear speed v, the angular speed in RPM, and the angular speed in rad/s?
A wheel rotates with a constant angular acceleration of 3.0 rad/. If the angular speed of...
A wheel rotates with a constant angular acceleration of 3.0
rad/. If the angular speed of the wheel is 2 rad/s at t = 0,
through what angular displacement does the wheel rotate in 2
s?
10 rad.
6 rad.
15 rad.
4 rad.
12 rad.
Based on question number 3, through how many revolutions has the
wheel turned during this time interval?
4 rev.
3 rev.
1.6 rev.
5 rev.
2 rev.
Based on question number 3, what is...
A compact disc rotates from rest up to an angular speed of 34.3 rad/s in a...
A compact disc rotates from rest up to an angular speed of 34.3
rad/s in a time of 0.867 s.
(a) What is the angular acceleration of the
disc, assuming the angular acceleration is uniform?
rad/s2
(b) Through what angle does the disc turn while
coming up to speed?
rad
(c) If the radius of the disc is 4.45 cm, find the
tangential speed of a microbe riding on the rim of the disc.
m/s
(d) What is the magnitude...
At t = 0, a flywheel has an angular velocity of 6.2 rad/s, an angular acceleration...
At t = 0, a flywheel has an angular velocity of 6.2 rad/s, an
angular acceleration of -0.18 rad/s2, and a reference line at θ0 =
0. (a) Through what maximum angle θmax will the reference line turn
in the positive direction? What are the (b) first and (c) second
times the reference line will be at θ = θmax/5? At what (d)
negative time and (e) positive time will the reference line be at θ
= -7.7 rad?
A wheel has an initial angular velocity of 1 rad/s and undergoes an angular acceleration of...
A wheel has an initial angular velocity of 1 rad/s and undergoes
an angular acceleration of 10 rad/s^2. (a) How many radians does it
rotate in 4 sec? (b) What is its angular velocity at this time?
A flywheel turns through 22 rev as it slows from an angular speed of 3.0 rad/s...
A flywheel turns through 22 rev as it slows from an angular
speed of 3.0 rad/s to a stop.
(a) Assuming a constant angular acceleration, find the time for
it to come to rest.
= 92.15 s
(b) What is its angular acceleration?
_______rad/s2
(c) How much time is required for it to complete the first 11 of
the 22 revolutions?
_________ s
Two spheres are each rotating at an angular speed of 24.6 rad/s about axes that pass...
Two spheres are each rotating at an angular speed of 24.6 rad/s
about axes that pass through their centers. Each has a radius of
0.440 m and a mass of 1.65 kg. However, one is solid and the other
is a thin-walled spherical shell. Suddenly, a net external torque
due to friction (magnitude = 0.230 N · m) begins to act on each
sphere and slows the motion down. How long does it take (a) the
solid sphere and (b)...
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