Advertisements
Advertisements
प्रश्न
Name the force which wears away two surfaces as they move over one another.
Advertisements
उत्तर
Force of friction
APPEARS IN
संबंधित प्रश्न
What do you mean by acceleration due to gravity?
A stone is thrown vertically upwards with initial velocity u reaches a height ‘h’ before coming down. Show that the time taken to go up is the same as the time taken to come down.
Solve the problem.
If the mass of a planet is eight times the mass of the Earth and its radius is twice the radius of the Earth, what will be the escape velocity for that planet?
Explain why:
Objects fall to the earth.
What do you understand by the free fall?
The value of gravitational acceleration (g) is ________.
The value of gravitational acceleration at the centre of earth is zero.
Write scientific reason.
The value of gravitational acceleration (g) decreases as we go deep inside the earth.
The mass of planet ‘X” is four times that of the earth and its radius is double the radius of the earth. The escape velocity of a body from the earth is 11.2 × 103 m/s. Find the escape velocity of a body from the planet 'X’.
Write a short note.
Escape Velocity
