Advertisements
Advertisements
Question
To project the rockets which of the following principle(s) is /(are) required?
Options
Newton’s third law of motion
Newton’s law of gravitation
law of conservation of linear momentum
both a and c
Solution
Both a and c
APPEARS IN
RELATED QUESTIONS
What is the importance of the universal law of gravitation?
Choose the correct alternative:
Acceleration due to gravity increases/decreases with increasing depth. (assume the earth to be a sphere of uniform density).
Derive an expression for the gravitational field due to a uniform rod of length L and mass M at a point on its perpendicular bisector at a distance d from the centre.
A tunnel is dug along a chord of the earth at a perpendicular distance R/2 from the earth's centre. The wall of the tunnel may be assumed to be frictionless. Find the force exerted by the wall on a particle of mass m when it is at a distance x from the centre of the tunnel.
How will the force of gravitation between two objects change if the distance between them is:
Halved
How will the force of gravitation between two objects change if the distance between them is:
Almost zero
State Newton's law of gravitation. What is the difference between:
Gravity and gravitation
Solve the following problem.
Calculate the acceleration due to gravity at a height of 300 km from the surface of the Earth. (M = 5.98 × 1024 kg, R = 6400 km).
The _______ force is much weaker than other forces in nature.
Write the answer of the question with reference to laws of gravitation.
Write the value of the universal gravitational constant.
