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A trolley of mass 300 ks carrying a sand...

A trolley of mass 300 ks carrying a sand bag of 25 kg is moving uniformly with a speed of `27km//h` on a frictionless track. After a while, sand starts leaking out of a hole on the trolley's floor at the rate of `0.05kgs^(-1)`. What is the speed of the trolley after the entire sand bag is empty ?

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`=27 kmh^(-1)` (no change in speed)
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NCERT TAMIL-WORK, ENERGY AND POWER-EXERCISES
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  11. The bob A of a simple pendulum is released from a horizontal position ...

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  13. A particle of mass 0.5kg travels in a straight line with velocity v=ax...

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