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A boy lifted a small carton of 2 kg mass...

A boy lifted a small carton of 2 kg mass from the ground and placed it on his head. If the height of the boy is (1.5m), then calculate the work done `("Take g"=10m//s^(2))`.

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`"Work=Force"xx"Displacement"`
`="Weigth of the carton" xx "Height of the boy"`
`=2xx10xx1.5=30` Joule
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PEARSON IIT JEE FOUNDATION-WORK AND ENERGY -ASSESSMENT TEST (TEST 1)
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  3. Divyansh sat on a tree at a height of 2 metres . If he weighs 200 newt...

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  4. (a) What is mechanical energy ? (b) What is electromagnetic energy ?

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  5. Express 1250 N m in terms of Kilojoules .

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  6. Find the work done if a force of 2000 N is applied on a load and the l...

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  7. "" sources of energy can be replenished with the passage of time .

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  8. Rohit pushed a toy truck and it moved a distance of 10 m . How much fo...

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  9. Describe an energy chain giving two examples .

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  10. Write transformation of energy for the following appliances :

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  12. Potential energy of a body depends on : (i) Mass of the body (m) . ...

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  14. The energy possessed by a body due to its state of rest or state of mo...

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  15. The force constant of a simple harmonic oscillator is 3 xx 10^(6) N//m...

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  16. Gravitational potential energy depends on height of the body from surf...

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  17. Force = 2000 N Distance = 100 cm = 100/100 m = 1 m (conversion fro...

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  18. Work done = 1000 J Distance = 10 m Force applied = Work done/Dista...

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  19. Describe an energy chain giving two examples .

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  20. Name the devices or machines which convert : (a) Mechanical energy i...

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  21. What is the lowest limit of frequency range that is audible to human b...

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