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प्रश्न
The speed-time graph of an ascending passenger lift is given alongside. What is the acceleration of the lift:
(1) during the first two seconds ?
(2) between second and tenth second ?
(3) during the last two seconds ?
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उत्तर
(i) We have to find the acceleration from the given graph.
Acceleration = slope of line AB
= `((4.6-0))/((2-0)) "m/s"^2`
= 2.3 `"m/s"^2`
(ii) Between second and tenth second, it represents uniform speed, so, acceleration acting on the lift is zero.
(iii) During the last two seconds, it represents retardation of the lift, so its acceleration is (–2.3 m/s2).
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संबंधित प्रश्न
What does the slope of a speed-time graph indicate ?
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What type of motion is represented by the following graph ?
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What does the area of an acceleration – time graph represent?
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Draw the following graph:
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Its time-velocity graph is a straight line
Slope of the velocity-time graph gives ______.
