Advertisements
Advertisements
प्रश्न
How does the force of attraction between the two bodies depend upon their masses and the distance between them? A student thought that two bricks tied together would fall faster than a single one under the action of gravity. Do you agree with his hypothesis or not? Comment.
Advertisements
उत्तर
From Newton’s law of gravitation, the force of attraction between two bodies is directly proportional to the product of their masses and inversely proportional to the square of the distance between their centres i.e.,
F α `("m"_1"m"_2)/"d"^2`
The student’s hypothesis is wrong. As acceleration due to gravity is independent of the mass of the falling body, therefore, the two bricks tied together fall with the same speed as the single one to reach the ground at the same time under the action of gravity.
APPEARS IN
संबंधित प्रश्न
Is the acceleration due to gravity of earth ‘g’ a constant ? Discuss.
An object takes 5 s to reach the ground from a height of 5 m on a planet. What is the value of g on the planet?
Right or wrong sentence:
The value of g is highest at the equator.
Right or wrong sentence.
The value of G varies from place to place.
The mass of the moon is `1/81` of the mass of the earth. Its diameter is `1/3.7` of that of the earth. If acceleration due to gravity on the surface of the earth is 9.8 m/s2, then the acceleration due to gravity on the surface of the moon.
The acceleration due to gravity on moon is `(1/6)^"th"` times the acceleration due to gravity on earth. If the ratio of the density of earth 'ρe' to the density of moon 'ρm' is `5/3`, then the radius of moon 'Rm' in terms of the radius of earth 'Re' is ______.
In the relation F = `"G M" "m"//"d"^2`, the quantity G
If the change in the value of g at the height h above the surface of the earth is the same as at a depth x below it, then ______.
(both x and h being much smaller than the radius of the earth)
If the Moon's mass is 1/80 of Earth's mass and its radius is 1/4 of Earth's radius, what is the ratio of g on the Moon to g on Earth?
A monkey of mass 50 kg climbs on a rope which can withstand the tension (T) of 350 N. If monkey initially climbs down with an acceleration of 4 m/s2 and then climbs up with an acceleration of 5m/s2. Choose the correct option (g = 10 m/s2).
