Advertisements
Advertisements
प्रश्न
Write acceleration due to gravity value on the surface of Earth.
Advertisements
उत्तर
Acceleration due to gravity value on the surface of earth is 9.8 m/s2.
APPEARS IN
संबंधित प्रश्न
What do you mean by free fall?
Gravitational force acts on all objects in proportion to their masses. Why then, a heavy object does not fall faster than a light object?
A stone is released from the top of a tower of height 19.6 m. Calculate its final velocity just before touching the ground.
A stone is thrown vertically upward with an initial velocity of 40 m/s. Taking g = 10 m/s2, find the maximum height reached by the stone. What is the net displacement and the total distance covered by the stone?
What is the acceleration produced in a freely falling body of mass 10 kg ? (Neglect air resistance)
Explain why, if a stone held in our hand is released, it falls towards the earth.
What is the force of gravity on a body of mass 150 kg lying on the surface of the earth? (Mass of earth = 6 x 1024 kg; Radius of earth = 6.4 x 106 m; G = 6.7 x 10-11 Nm2/kg2)
Why does a sharp knife cut objects more effectively than a blunt knife ?
Name the force which stops you falling through the floor.
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?
i) If g = GM/r2 then where will the value of g be high at Goa Beach or on top of Mount Everest?
For freely falling object we can write the Newton’s second equation of motion as …..
A metal ball of mass 5 kg falls from a height of 490 m. How much time it will take to reach the ground? (g = 9.8 m/s2)
What would be the value of ‘g’ on the surface of the earth if its mass was twice and its radius half of what it is now?
Choose one or more correct alternatives.
Which of the forces involved in dragging a heavy object on a smooth, horizontal surface, have the same magnitude?
- The horizontal applied force
- gravitational force
- reaction force in vertical direction
- force of friction
A force acts for 0.1 s on a body of mass 2.0 kg initially at rest. The force is then withdrawn and the body moves with a velocity of 2 m s-1. Find the magnitude of the force.
What is escape velocity?
Write scientific reason.
The value of gravitational acceleration (g) decreases as we go deep inside the earth.
Write scientific reason.
The value of gravitational acceleration (g) is taken to be -g when studying the motion of an object thrown upwards in a straight line.
