Assuming that the Sun were to collapse to the size of the Earth, it would rotate much more rapidly than it does currently. The Sun’s rotation is currently about 27 days at the equator, but this is due to the fact that it is a gas giant. If the Sun were to collapse to the size of the Earth, it would be a much more dense object, and therefore would rotate much more quickly. The exact rate of rotation would depend on the Sun’s final mass and radius, but it would likely be somewhere in the range of 1-2 days.
Other related questions:
Q: What would happen to the orbit of Earth if the sun were to instantly become a black hole?
A: If the sun were to instantly become a black hole, the orbit of Earth would be unaffected.
Q: Would the Earth spin faster if it was closer to the sun?
A: There is no definitive answer to this question, as there are many factors that could affect the rotational speed of the Earth. Some scientists believe that the Earth’s rotation is influenced by the sun’s gravitational pull, so if the Earth were closer to the sun, its rotation might speed up. However, other factors such as the Earth’s internal heat and the amount of friction between the Earth’s surface and the atmosphere could also play a role in the planet’s rotation, so it is difficult to say for sure how the Earth’s rotation would be affected by a change in its distance from the sun.
Q: What would happen if the sun moved an inch away from Earth?
A: If the sun moved an inch away from Earth, the Earth would experience a decrease in temperature. This is because the sun’s heat and light would be less intense, and the Earth would receive less energy from the sun. Additionally, the days would become shorter, as the sun would be lower in the sky.
Q: How does the speed of Earth change when it is near sun?
A: There is no definitive answer to this question as the speed of Earth’s orbit around the sun can vary depending on a number of factors, including the position of Earth in its orbit and the gravitational pull of other bodies in the solar system. Nevertheless, on average, Earth’s orbital speed is approximately 107,000 kilometers per hour.