Circular MotionMedium
Question
Assuming the motion of Earth around the Sun as a circular orbit with a constant speed of 30 km/s.
Options
A.The average velocity of the earth during a period of 1 year is zero
B.The average speed of the earth during a period of 1 year is zero.
C.The average acceleration during first 6 monts of the year is zero
D.The instantaneous acceleration of the earth points towards the Sun.
Solution
(A) During a period of 1 year displacement is equal to zero, so that average velocity is equal to zero.
(B) During a period of one year distance travel is not equal to zero. So that average speed is not equal to zero.
(C) During a period of first 6 month of the year change in velocity not equal to zero. So that average acceleration is not equal to zero.
(D) In uniform circular motion instantaneous acceleration is act towards centre of circular path.
(B) During a period of one year distance travel is not equal to zero. So that average speed is not equal to zero.
(C) During a period of first 6 month of the year change in velocity not equal to zero. So that average acceleration is not equal to zero.
(D) In uniform circular motion instantaneous acceleration is act towards centre of circular path.
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