During our discussion of the motion of a falling body near Earths surface, we said that the
Question:
During our discussion of the motion of a falling body near Earth’s surface, we said that the gravitational force acting on it—its weight—is constant. But the law of universal gravitation tells us that the gravitational force on a body increases as it gets closer to Earth. Is there a contradiction here? Explain.
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In Physics, a force is an influence that can change the motion of an object. A force can cause an object with mass to change its velocity, i.e., to accelerate. Force can also be described intuitively as a push or a pull. A force has both magnitude and direction, making it a vector quantity. In this video, the concept of force and torque is demonstrated with the practical application of changing the flat tire of the car.
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