STATEMENT - 1 : An astronaut in an orbiting space station above the earth experiences weightlessness. because STATEMENT - 2 : An object moving around the earth under the influence of Earth's gravitational force is in a state of "free-fall".
Answer: A. Statement-1 is True, Statement-2 is True, Statement-2 is a correct explanation for Statement-1
Or read the worked solution below. Jump to the steps ↓
Written solution
Step 1: Analyze Statement 2 regarding free-fall.
An object orbiting the Earth under the sole influence of gravity is in a state of free-fall because there is no contact or support force acting on it, where gravity provides the necessary centripetal force.
Thus, Statement 2 is true.
Step 2: Analyze Statement 1 regarding weightlessness.
Both the space station and the astronaut accelerate towards the center of the Earth at the same rate.
Because they share the same acceleration, the normal contact force between the astronaut and the station is zero.
The apparent weight of the astronaut is determined by this normal force.
Thus, the astronaut experiences weightlessness, making Statement 1 true.
Step 3: Determine the relationship between the statements.
The weightlessness in Statement 1 is a direct consequence of the free-fall condition described in Statement 2.
Answer: Both Statement 1 and Statement 2 are true, and Statement 2 is the correct explanation of Statement 1.