Question

In the context of torque, why do you think it would be difficult to propel an astronaut floating in space outside a space station directly in a straight line?

Answer 1

Astronauts are seen floating around in the outer space because of zero gravity. Astronauts orbiting the Earth in a space station experience zero gravity or weightlessness because their spacecraft continuously undergoes changes in velocity in its orbit in order to prevent it from being pulled into the atmosphere. This acceleration, which is often known as a centrifugal force, counterbalances gravity. Due to this counterbalance there is not any force remaining to generate the torque. Hence it is difficult to generate torque to propel astronaut in straight line.

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