Advertisements
Advertisements
प्रश्न
What is the acceleration due to gravity?
Advertisements
उत्तर
According to Newton’s second law of motion, a force acting on a body results in its acceleration. Thus, the gravitational force due to the earth on a body results in its acceleration. This is called acceleration due to gravity and is denoted by ‘g’.
APPEARS IN
संबंधित प्रश्न
A stone is allowed to fall from the top of a tower 100 m high and at the same time another stone is projected vertically upwards from the ground with a velocity of 25 m/s. Calculate when and where the two stones will meet.
Which force is responsible for the moon revolving round the earth ?
What is the acceleration produced in a freely falling body of mass 10 kg ? (Neglect air resistance)
Fill in the following blank with suitable word :
The acceleration due to gravity on the moon is about ………………of that on the earth.
During a free fall, will heavier objects accelerate more than lighter ones ?
Give reason for the following :
The force of gravitation between two cricket balls is extremely small but that between a cricket ball and the earth is extremely large.
What is the usual value of the acceleration due to gravity of earth ?
Explain why, a wide steel belt is provided over the wheels of an army tank.
Explain why, the tip of a sewing needle is sharp.
Name the force which pulled the apple off Isaac Newton’s tree.
For freely falling object we can write the Newton’s second equation of motion as …..
A force of 15 N acts on a body of mass 2 kg. Calculate the acceleration produced.
A force causes an acceleration of 10 m s-2 in a body of mass 500 g. What acceleration will be caused by the same force in a body of mass 5 kg?
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 The force is then withdrawn and the body moves with a velocity of 2 m s-1.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.
A car is moving with a uniform velocity 30 ms-1. It is stopped in 2 s by applying a force of 1500 N through its brakes. Calculate the following values : The retardation produced in car.
What force, in newton, your muscles need to apply to hold a mass of 5 kg in your hand? State the assumption.
The free fall of an object is possible only in _______.
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.
Free Fall
