Which of the following is true about how the planets revolve around the sun and

Question

Which of the following is true about how the planets revolve around the sun and how the Sun rotates? O The planets all revolve in one direction and the Sun rotates on its axis in the other direction. O The planets revolve around the Sun in the same direction that the Sun rotates. The Sun rotates on its axis in the opposite direction from the revolution of the planets and thus angular momentum is conserved. O There is no pattern to the rotation of all these bodies. O The Sun does not rotate, but the planets all revolve around it in the same direction. 0. 0-2.5 points KFT & MC.019 Why does the axis of rotation of a top change its direction as the top spins? O The inertia of the top keeps its orientation changing. O Conservation of rotational motion keeps the direction changing if it was changing to start. O Angular momentum is conserved. O Rotational kinetic energy causes the direction to shift O Gravitational force exerts a torque on the top.

Explanation / Answer

1) The solar system formed from a giant cloud of dust. The cloud of dust was initially spinning slightly. When the gravity pulled the dust together to form planets, they were all spinning the same way about their axes as well as revolving the same way about the Sun. This is why

The planets revolve around the Sun in the same direction that the Sun rotates.

2) The gravity exerts a torque on the spinning top. And since torque is the rate of change of angular momentum, and it must be in the same direction as the torque on the top – that is, in the sideways direction. Hence the axis of rotation of top changes direction. So the answer is

Gravitational force exerts a torque on the top.

Related Questions

Navigate

• Browse (All)
• Browse W
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.