Advertisements
Advertisements
प्रश्न
An object of mass 10 kg is hanging on a spring scale which is attached to the roof of a lift. If the lift is in free fall, the reading in the spring scale is ___________.
विकल्प
98 N
zero
49 N
9.8 N
उत्तर
An object of mass 10 kg is hanging on a spring scale which is attached to the roof of a lift. If the lift is in free fall, the reading in the spring scale is zero.
APPEARS IN
संबंधित प्रश्न
A planet moving along an elliptical orbit is closest to the Sun at distance r1 and farthest away at a distance of r2. If v1 and v2 are linear speeds at these points respectively. Then the ratio `"v"_1/"v"_2` is
If the distance between the Earth and Sun were to be doubled from its present value, the number of days in a year would be ___________.
The gravitational potential energy of the Moon with respect to Earth is ____________.
The work done by the Sun’s gravitational force on the Earth is __________.
What is meant by the superposition of the gravitational field?
Derive the expression for gravitational potential energy.
Prove that at points near the surface of the Earth, the gravitational potential energy of the object is U = mgh.
If the ratio of the orbital distance of two planets `"d"_1/"d"_2` = 2, what is the ratio of gravitational field experienced by these two planets?
Calculate the gravitational field at point O due to three masses m1, m2 and m3 whose positions are given by the following figure. If the masses m1 and m2 are equal what is the change in a gravitational field at the point O?
What is the gravitational potential energy of the Earth and Sun? The Earth to Sun distance is around 150 million km. The mass of the Earth is 5.9 × 1024 kg and the mass of the Sun is 1.9 × 1030 kg.
