(a) Calculate the torque required to accelerate the Earth in 6 days from rest to its...
(a) Calculate the torque required to accelerate the Earth in 6
days from rest to its present angular speed about its axis.
(b) Calculate the energy required.
(c) Calculate the average power required.
Homework Answers
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(a) Calculate the torque required to accelerate the Earth in 6
days from rest to its...
Calculate the applied torque needed to accelerate it from rest to 1750 rpm in 5.10 s . Take into account a frictional torque that has been measured to slow down the wheel from 1500 rpm to rest in 53.0 s .
A grinding wheel is a uniform cylinder with a radius of 8.50 cm and a mass of 0.480 kg . A) Calculate its moment of inertia about its center. A is I = 1.73×10−3 kg⋅m2 . B) Calculate the applied torque needed to accelerate it from rest to 1750 rpm in 5.10 s . Take into account a frictional torque that has been measured to slow down the wheel from 1500 rpm to rest in 53.0 s . I tried doing...
1. How much energy is required to accelerate a spaceship with a rest mass of 133...
1. How much energy is required to accelerate a spaceship with a rest mass of 133 metric tons to a speed of 0.558 c? 2. Every day our Earth receives 1.55×1022 J energy from the Sun. If we were able to use 0.75 percent of this energy to accelerate spaceships, then how many missions would be possible in one year?
How much energy is required to accelerate a spaceship with a rest mass of 105 metric...
How much energy is required to accelerate a spaceship with a rest mass of 105 metric tons to a speed of 0.522 c? Submit Answer Tries 0/20 Every day our Earth receives 1.55x1022 ) energy from the Sun. If we were able to use 0.85 percent of this energy to accelerate spaceships, then how many missions would be possible in one year? 10
Question 6 A disk rotates about its central axis starting from rest and accelerates with constant...
Question 6 A disk rotates about its central axis starting from rest and accelerates with constant angular acceleration. At one time it is rotating at 7.70 rev/s; 55.0 revolutions later, its angular speed is 20.0 rev/s. Calculate (a) the angular acceleration (rev/s2), (b) the time required to complete the 55.0 revolutions, (c) the time required to reach the 7.70 rev/s angular speed, and (d) the number of revolutions from rest until the time the disk reaches the 7.70 rev/s angular...
How much energy is required to accelerate a spaceship with a rest mass of 110 metric...
How much energy is required to accelerate a spaceship with a rest mass of 110 metric tons to a speed of 0.553 c? Submit Answer Tries 0/12 Every day our Earth receives 1.550x1022 ) energy from the Sun. If we were able to use 1.05 percent of this energy to accelerate spaceships, then how many missions would be possible in one year? Submit Answer Tries 0/12
How much energy is required to accelerate a spaceship with a rest mass of 124 metric...
How much energy is required to accelerate a spaceship with a rest mass of 124 metric tons to a speed of 0.565 c? Hints: In the acceleration process the energy we have is converted to the kinetic energy of the spaceship. The classical kinetic energy of an object is half of the mass multiplied by the square of the velocity. What is the relativistic form of the kinetic energy? Incorrect. Tries 6/20 Previous Tries Every day our Earth receives 1.55×1022...
Calculate the net torque needed to accelerate this merry go round A merry-go-round accelerates from rest to 0.78rad/s...
Calculate the net torque needed to accelerate this merry go
round
A merry-go-round accelerates from rest to 0.78rad/s in 32 s. Assuming the merry-go-round is a uniform disk of radius 8.0m and mass 3.20 Times 104kg , calculate the net torque required to accelerate it. Express your answer to two significant figures and include the appropriate units.
1. Assuming there are 365 days in a year, how many days are required for the...
1. Assuming there are 365 days in a year, how many days are
required for the Earth to undergo an angular displacement of 2.65
rad as it revolves around the Sun?
days
2. A wagon wheel consists of a 2.77-kg hoop of radius 0.625
meters and 12 0.207-kg spokes.
(a) What is the moment of inertia of the wagon wheel for
rotation about an axis through its center and perpendicular to the
wheel?
kg·m2
(b) If the wheel is rotating...
Calculate the energy required to accelerate a 1.0 x 10^8 kg ship to a speed such...
Calculate the energy required to accelerate a 1.0 x 10^8 kg ship to a speed such that, in the Earth frame of reference, a passenger ages only 10% as fast as we do on Earth. Compare this energy to the rest mass-energy of the ship (Answer: 8.1 x 10^25 J = 9 mc^2)
(a) Calculate the angular momentum of Earth that arises from its spinning motion on its axis,...
(a) Calculate the angular momentum of Earth that arises from its spinning motion on its axis, treating Earth as a uniform solid sphere. J · s (b) Calculate the angular momentum of Earth that arises from its orbital motion about the Sun, treating Earth as a point particle. J · s
How much energy is required to accelerate a spaceship with a rest mass of 105 metric tons to a speed of 0.522 c? Submit Answer Tries 0/20 Every day our Earth receives 1.55x1022 ) energy from the Sun. If we were able to use 0.85 percent of this energy to accelerate spaceships, then how many missions would be possible in one year? 10
Question 6 A disk rotates about its central axis starting from rest and accelerates with constant angular acceleration. At one time it is rotating at 7.70 rev/s; 55.0 revolutions later, its angular speed is 20.0 rev/s. Calculate (a) the angular acceleration (rev/s2), (b) the time required to complete the 55.0 revolutions, (c) the time required to reach the 7.70 rev/s angular speed, and (d) the number of revolutions from rest until the time the disk reaches the 7.70 rev/s angular...
How much energy is required to accelerate a spaceship with a rest mass of 110 metric tons to a speed of 0.553 c? Submit Answer Tries 0/12 Every day our Earth receives 1.550x1022 ) energy from the Sun. If we were able to use 1.05 percent of this energy to accelerate spaceships, then how many missions would be possible in one year? Submit Answer Tries 0/12
Calculate the net torque needed to accelerate this merry go
round
A merry-go-round accelerates from rest to 0.78rad/s in 32 s. Assuming the merry-go-round is a uniform disk of radius 8.0m and mass 3.20 Times 104kg , calculate the net torque required to accelerate it. Express your answer to two significant figures and include the appropriate units.
1. Assuming there are 365 days in a year, how many days are
required for the Earth to undergo an angular displacement of 2.65
rad as it revolves around the Sun?
days
2. A wagon wheel consists of a 2.77-kg hoop of radius 0.625
meters and 12 0.207-kg spokes.
(a) What is the moment of inertia of the wagon wheel for
rotation about an axis through its center and perpendicular to the
wheel?
kg·m2
(b) If the wheel is rotating...
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