During free fall, a body is in the state of:
Weightlessness
Apparent weight is the normal reaction between a body and the surface supporting it. During free fall the only force acting on the body is gravity, and both the body and any support (if present) accelerate downwards at g together.
Because there is no contact force to press against, the normal reaction becomes zero, so the body feels weightless. This is the same reason astronauts inside an orbiting spacecraft — which is essentially in free fall around Earth — appear weightless.
Hence, Weightlessness is correct.
Similar Questions
What type of force is responsible for the Moon’s circular motion around Earth?
The mass of an object on Earth is 60 kg. What is its mass on the Moon?
The unit of 'g' is the same as the unit of acceleration, i.e. _____.
Earth attracts objects towards itself. This is due to _____.
The weight of an object on Earth's surface is 6000 N. What will its weight be on the Moon's surface?
Choose the incorrect statement.
A. G on the Moon is one-sixth of that on Earth.
B. G on the Moon is equal to G on Earth.
C. Gravitational force between two point masses 2 kg and 3 kg placed 1 m apart is \(40.02 \times 10^{-11}\) N.
D. The force is directly proportional to the product of the masses of two bodies.The SI unit of the universal gravitational constant is:
A particle is projected vertically upward with a speed of \(\sqrt{1.6\text{gR}}\). If the Earth's radius is R, what is the maximum height attained by the particle?
What will be the ratio of gravity at depth \(h\) below the Earth's surface and at height \(h\) above the Earth's surface, where \(h << R\) (R is Earth's radius):
The value of 'g':
Important Questions from Gravitation
The known forces of nature can be divided into four classes, viz., gravity, electromagnetism, weak nuclear force and strong nuclear force. With reference to them, which one of the following statements is not correct?
- A spacecraft of mass m = 1000 kg has a fully reflecting sail that is oriented perpendicular to the direction of the sun. The sun radiates 10 26 W and has a mass M = 10 30 kg. Ignoring the effect of the planets, for the gravitational pull of the sun to balance the radiation pressure on the sail, the area of the sail will be
The force of attraction between two bodies separated by a distance of d is F. The distance for which the force of attraction between them is 64 F is ________.
If two satellites of masses m1 and m2 are revolving around a earth in a circular orbits of radius r1 and r2, then the ratio of their orbital velocities \(\dfrac{v_1}{v_2}\) is
A women whose mass is 60 kg on the earth surface is in an spacecraft at an altitude of two times the earth radius. Her mass there is
