Question

Unlike the other planets in the Solar System, the planet Venus rotates at an extremely slow rate, making one rotation (in the opposite, or retrograde, direction compared to other planets) every 246 Earth days. One science fiction idea to spin Venus up is to attach massive rockets to the surface of the planet to increase its spin rate. Assume such rockets are able to apply a tangential acceleration of g = 9.8 m/s2. If this was possible (it’s definitely not at the moment), how much time would it take to spin Venus up from essentially zero rotation to a rotation rate similar to the Earth? The radius of Venus is about 6,052 km

Answer 1

Rotation rate of earth ( on its own axis)

Initial rotation rate of Venus ,

Final rotation rate of Venus

Tangential acceleration

Angular acceleration of Venus

Time taken for venus to rotate at rotation rate similar to earth is