A particle moves in a circular path with a uniform speed. Its motion is
(a) periodic
(b) oscillatory
(c) simple harmonic
(d) angular simple harmonic.
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A motorcyclist drives from A to B with a uniform speed of 30 km h–1 and returns back with a speed of 20 km h^–1. Find its average speed
Let AB = x, So t 1=x /30, and t2 = x /20 Total time = t1 + t2 = 5x / 60 h. Average speed for entire journeyTotal distance /Total...
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When a particle moves in a circle with a uniform speed
(d) its velocity and acceleration both change.
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A car of mass M is moving on a horizontal circular path of radius r. At an instant its speed is u and is increasing at a rate α.
(b) The magnitude of the frictional force on the car is greater than mv2/r (c) The friction coefficient between the ground and the car is not less than α/g. Explanation: Since the circular...
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The motion of a particle is given by x = A sincot + costa. The motion of the particle is
(c) simple harmonic with amplitude √(A2+B2)
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A particle moves in a circular path with a continuously increasing speed. Its motion is
(d) none of them. EXPLANATION: Though the particle repeats its motion but not at a regular interval (Since the speed is continuously increasing), so (a) is not true. (b) and (c) are...
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All the planets move around the Sun in a (i) Circular path (ii) Rectangular path (iii) Elongated path
(iii) Elongated path
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A particle moves in a region having a uniform magnetic field and a parallel, uniform electric field.
(d) a helix with nonuniform pitch.
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When a particle moves in a circle with a uniform speed (a) its velocity and acceleration are both constant
(d) its velocity and acceleration both change. Explanation: Velocity and acceleration are both vectors and a vectors is fully defined with its magnitude and direction. Even when one entity changes, the vector...
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A particle moves in a circular path with a uniform speed. Its motion is (a) periodic
(a) periodic EXPLANATION: Since a uniform circular motion repeats itself at a regular time interval. (b) not true because it is not a to and fro motion. ...
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A spherical body moves with a uniform angular velocity (ω) around a circular path of radius r. Which one of the following statements is correct?
(b) A body moving with a uniform angular velocity ω on a circular path of radius r has radial acceleration equal ω2r directed towards the centre of the path.
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