1. | \(mr\) | 2. | \(\dfrac{m}{r}\) |
3. | \(m\sqrt r\) | 4. | \(\dfrac{m}{\sqrt r}\) |
If the axis of rotation of the earth was extended into the space, then it would pass close to:
1. the moon
2. the sun
3. the pole star
4. the center of mass of all the planets in the solar system
(A) | a straight line |
(B) | an ellipse |
(C) | a parabola |
(D) | a hyperbola |
1. | (A) and (B) only |
2. | (A) , (B) and (C) only |
3. | (A) , (B) and (D) only |
4. | (A) , (B) , (C) and (D) |