Physics
Grade-10
Easy
Question
Choose the correct statement from the following: Weightlessness of an astronaut moving in a satellite is a situation of:
- Zero gravitational acceleration
- No gravity
- Zero mass
- Freefall
Hint:
Weight is experienced when there is a normal force acting on the body.
The correct answer is: Freefall
A satellite is considered as a freely falling object in space. The astronaut within the satellite is also considered a free falling object. Hence, due to the lack of a normal force acting on the astronaut, the astronaut feels weightless in a satellite. Therefore, weightlessness in a satellite is due to free fall of the satellite.
Related Questions to study
Physics
Choose the correct statement:
Assertion: In a circular motion, the centripetal and centrifugal forces acting in opposite directions balance each other.
Reason: Centripetal and centrifugal forces don’t act at the same time.
Choose the correct statement:
Assertion: In a circular motion, the centripetal and centrifugal forces acting in opposite directions balance each other.
Reason: Centripetal and centrifugal forces don’t act at the same time.
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________and ________ orbits provide bound orbits to the satellite.
________and ________ orbits provide bound orbits to the satellite.
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An astronaut's weight in an artificial satellite revolving around the Earth is:
An astronaut's weight in an artificial satellite revolving around the Earth is:
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The direction of centripetal acceleration is always ____ the circular path.
The direction of centripetal acceleration is always ____ the circular path.
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The satellite's orbital velocity does not depend upon:
The satellite's orbital velocity does not depend upon:
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If the speed of the orbiting body is less than the orbital velocity it:
If the speed of the orbiting body is less than the orbital velocity it:
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If r represents the radius of the orbit of a planet of mass m moving around the Sun of mass M, the orbital velocity of the planet is given by:
If r represents the radius of the orbit of a planet of mass m moving around the Sun of mass M, the orbital velocity of the planet is given by:
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If suddenly the gravitational force between the Earth and a satellite revolving around it becomes zero, what will happen?
If suddenly the gravitational force between the Earth and a satellite revolving around it becomes zero, what will happen?
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The force acting between the objects in space is __________ force.
The force acting between the objects in space is __________ force.
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What would happen to the Earth if the gravity of the Sun was lost someday?
What would happen to the Earth if the gravity of the Sun was lost someday?
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What would happen to the Moon if the gravity of the Earth was lost someday?
What would happen to the Moon if the gravity of the Earth was lost someday?
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Which one of the following options is correct about the centripetal force?
a. It pulls an object towards the other
b. It keeps the body moving in a circular path
c. It acts perpendicular to the motion of the body
d. It is an attractive force
Which one of the following options is correct about the centripetal force?
a. It pulls an object towards the other
b. It keeps the body moving in a circular path
c. It acts perpendicular to the motion of the body
d. It is an attractive force
PhysicsGrade-10
Physics
Which one of the following options is correct about the motion of the Moon around the Earth?
a. The Moon falls towards the center of the Earth at every point at every point of its motion.
b. The Moon hits the surface of the Earth.
c. The direction of motion of the Moon and the direction of gravitational force are always perpendicular.
Which one of the following options is correct about the motion of the Moon around the Earth?
a. The Moon falls towards the center of the Earth at every point at every point of its motion.
b. The Moon hits the surface of the Earth.
c. The direction of motion of the Moon and the direction of gravitational force are always perpendicular.
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In which direction does the velocity of a body move in a circular motion point?
In which direction does the velocity of a body move in a circular motion point?
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In space, there is:
In space, there is:
PhysicsGrade-10
