(2) Find the acceleration due to gravity at a distance of 12,000 km from the centre of
the earth. (Mass of the earth = 6 x 10-- kg)
(Ans 2.78 m/s)
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Forces can be described as a push or pull on an object. They can be due to phenomena such as gravity, magnetism, or anything that might cause a mass to accelerate. In physics, a force is any interaction that, when unopposed, will change the motion of an object.
S. I unit is Newton ( N.).
Forces can be measured using a device called force meter. The unit of force is called the Newton. It is represented by the symbol N. A force of 2N is smaller than 7N.
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