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A wall clock uses a vertical spring-mass system to measure the time. Each time the mass reaches an extreme position, the clock advances by a second. The clock gives correct time at the equator. If the clock is taken to the poles, it will,

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Important Questions on Simple Harmonic Motion

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A pendulum clock, keeping correct time, is taken to high altitudes.
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A simple pendulum is executing simple harmonic motion with a time period T. If the length of the pendulum is increased by 21%, the increase in the time period of the pendulum of increased length is 
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The time period of a simple pendulum in a stationary lift is T. When the lift falls freely, then its time period will be,
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The period of oscillation of a simple pendulum of length l suspended from the roof of a vehicle, which moves without friction down an inclined plane of inclination α is given by
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Time period of a simple pendulum will be double, if we
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The distance between the point of suspension and the centre of gravity of a compound pendulum is l and the radius of gyration about the horizontal axis through the centre of gravity is k. Then, its time period will be,
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In the compound pendulum, the minimum period of oscillation will be,
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The distance of point of a compound pendulum from its centre of gravity is l, the time period of oscillation relative to this point is T. If g=π2, the relation between l and T will be,