JEE · NEET Previous Year Question
The ratio of angular speed of hour hand of a watch to the angular speed of earth's rotation about its axis, is
Topic: JEE PYQ
Answer: A. Full step-by-step solution below.
- A
- B
- C
- D
Correct answer: A
Solution
(a) : Time taken by hour hand to complete one rotation is 12 hrs.Time taken by Earth to complete one rotation is .
Required ratio,
More Rotational Mechanics PYQs
- Two discs of same mass and same thickness (t) are made from two different matcrials of densities ' ' and ' '…
- The ratio of the radii of gyration of a circular disc about a tangential axis in the plane of the disc and of a circular ring of t…
- A particle starting from rest, moves in a circle of radius '. It attains a velocity of…
- A solid homogenous sphere of mass and radius is moving on a rough horizontal surface, partly rolling and partly sliding. Duri…
- A sphere and a hollow cylinder without slipping, roll down two separate inclined planes and , respectively. They cover sa…