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If the work done by a force in moving an...

If the work done by a force in moving an object through a distance of 20 cm is 24.2 J, what is the magnitude of the force ?

A

122 N

B

121 N

C

123 N

D

226 N

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The correct Answer is:
B
NA
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LAKHMIR SINGH & MANJIT KAUR-WORK AND ENERGY-Exercise
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  2. How much is the mass of a man if he has to do 2500 joules of work in c...

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  3. If the work done by a force in moving an object through a distance of ...

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  4. A boy weighing 40 kg makes a high jump of 1.5 m. (i) What is his kin...

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  5. What type of energy is possessed : (a) by the stretched rubber strin...

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  6. A weightlifter is lifting weights of mass 200 kg up to a height of 2 m...

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  7. (a) Define the term 'work'. Write the formula for the work done on a b...

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  8. (a) When do we say that work is done ? Write the formula for the work ...

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  9. (a) What happens to the work done when the displacement of a body is a...

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  10. (a) Define the term 'energy' of a body. What is the SI unit of energy....

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  11. (a) What do you understand by the kinetic energy of a body ? (b) A b...

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  12. (a) Explain by an example what is meant by potential energy. Write dow...

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  13. (a) What is the difference between gravitational potential energy and ...

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  14. A car is accelerated on a lavelled road and attains a velocity 4 times...

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  15. A car is accelerated on a lavelled road and attains a speed of 4 times...

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  16. In case of negative work, the angle between the force and displacement...

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  17. An iron sphere of mass 10 kg has the same diameter as an aluminium sph...

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  18. A girl is carrying a school bag of 3 kg mass on her back and moves 200...

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  19. The work done on an object does not depend on the :

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  20. Water stored in a dam possesses

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