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तामिळनाडू बोर्ड ऑफ सेकेंडरी एज्युकेशनएस.एस.एल.सी. (इंग्रजी माध्यम) इयत्ता ९

Which one of the following is most likely not a case of uniform circular motion? - Science

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प्रश्न

Which one of the following is most likely not a case of uniform circular motion?

पर्याय

  • Motion of the Earth around the Sun.

  • Motion of a toy train on a circular track.

  • Motion of a racing car on a circular track.

  • Motion of hours’ hand on the dial of the clock.

MCQ
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उत्तर

Motion of the Earth around the Sun.

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  या प्रश्नात किंवा उत्तरात काही त्रुटी आहे का?
पाठ 2: Motion - Exercise [पृष्ठ २३]

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सामाचीर कलवी Science [English] Class 9 TN Board
पाठ 2 Motion
Exercise | Q I. 2. | पृष्ठ २३

संबंधित प्रश्‍न

A particle rotates in U.C.M. with tangential velocity V along a horizontal circle of diameter ‘D' . Total angular displacement of the particle in time 't' is..........


A particle starts from the origin at t = 0 s with a velocity of 10.0 `hatj "m/s"` and moves in the x-y plane with a constant acceleration of `(8.0 hati + 2.0 hatj) ms^(-2)`.

  1. At what time is the x-coordinate of the particle 16 m? What is the y-coordinate of the particle at that time?
  2. What is the speed of the particle at the time?

Differentiate between uniform linear motion and uniform circular motion.


Define Uniform circular motion.


A particle performs uniform circular motion in a horizontal plane. The radius of the circle is 8 cm. The centripetal force acting on the particle is 15 N. Its kinetic energy is ____________.


Certain neutron stars are believed to be rotating at about 1 rev/s. If such a star has a radius of 1.6 km, the acceleration of an object on the equator of the star will be nearly ____________.


It is possible to have objects moving with uniform velocity but non-uniform acceleration.


A small bead of mass m can move on a smooth circular wire (radius R) under the action of a force F = `"Km"/"r"^2` directed (r = position of bead r from P and K = constant) towards a point P within the circle at a distance R/2 from the centre. The minimum velocity should be ______ m/s of bead at the point of the wire nearest the centre of force (P) so that bead will complete the circle. (Take `"k"/(3"R")` = 8 unit) 


A wheel is rotating at 900 rpm about its axis. When the power is cut off it comes to rest in 1 min. The angular retardation (assumed to be uniform (in rad s-1) is ______.


In uniform circular motion, although the speed is constant, why does acceleration occur?


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