a)What is meant by uniform circular motion? Give two examples
of uniform circular motion.
b)state and explain Newton's second law of motion
c)calculate the force required to impart to a cara velocity of 30 metre per second in 10 second starting from the rest the mass of car is 1500 kg.
Answers
Explanation:
it means rotation about own axis
a)Uniform circular motion is explained as a circular motion of a thing in a constant speed. The examples of uniform circular motion are rotation of earth around sun or revolution of earth and Centripetal force. ... In this process speed remains constant and the path is circle in nature.
b)Newton's second law of motion can be formally stated as follows: The acceleration of an object as produced by a net force is directly proportional to the magnitude of the net force, in the same direction as the net force, and inversely proportional to the mass of the object.
c)When a car starts from the rest, its initial velocity is 0 and here its moving velocity is mentioned to be 30m/s. ... Hence, the acceleration of the car is calculated as this difference in velocities / time, means here it is 30 / 10 = 3. The formula for finding the force is acceleration x mass, i.e. 1500 x 3 = 4500 Newton.
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