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प्रश्न
The power of a motor is 40 kW. At what speed can the motor raise a load of 20,000 N?
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उत्तर
Power = 40 KW
Force = 20,000 N
Power = force × Speed
Speed =`"Power"/"Force"`
`=(40" KW")/(20,000)`
`=(40,000)/(20,000)`
= 2 m/s-1.
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