Question

Which one of the following is most likely not a case of uniform circular motion? a) Motion of the Earth around the Sun. b) Motion of a toy train on a circular track. c) Motion of a racing car on a circular track. d) Motion of hours’ hand on the dial of the clock??


my main question is that the car and train are most probably the answer but the orbit of earth is eliptical or oval not circular

Answer 1

Well I think

30% ----->(d)Motion of hours hand on the dial of the clock

70% ----->(a) Motion of the Earth around the Sun

Answer 2

Answer

c.motion of racing car on a circular track because the speed of car is not remains same.

Explanation of doubt

motion of earth around the sun is a uniform circular motion because the earth takes uniform time to revolve around the sun at uniform speed (the orbit of eath is circular, the orbit is an imaginary line the earth moves circular around the sun)

Hope it helps

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