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How much work is done when a force of 1 ...

How much work is done when a force of 1 N moves a body through a distance of 1 m in its own direction ?

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(a) When do we say that work is done ? Write the formula for the work done by a body in moving up against gravity. Give the meaning of each symbol which occurs in it. (b) How much work is done when a force of 2 N moves a body through a distance of 10 cm in the direction of force?

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How much work is done by a force of 10 N in moving an object through a distance of 1 m in the direction of the force ?

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Fill in the following blank with suitable words: (a) Work is measured as a product of ………… and ……… (b) The work done on a body moving in a circular path is ………….. (c) 1 joule is the work done when a force of one ………. moves an object through a distance of one ........ in the direction of .............. (d) The ability of a body to do work is called .......... The ability of a body to do work because of its motion is called .......... (e) The sum of the potential and kinetic energies of a body is called................ energy.

Work done when a force of (7hat(i)-4hat(j)-4hat(k)) N moves a body through a distance of 10 metre in its own direction is

Fill In the blanks: 1 __ is the amount of work done by a force of 1 N acting through a distance of 1 __ 'in the direction of the force ..

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LAKHMIR SINGH & MANJIT KAUR-WORK AND ENERGY-Exercise
  1. To what height should a box of mass 150 kg be lifted, so that its pote...

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  2. A body of mass 2 kg is thrown vertically upwards with an initial veloc...

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  3. How much work is done when a force of 1 N moves a body through a dista...

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  4. A car is being driven by a force of 2.5 xx 10^(10) N. Travelling at a...

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  5. Explain by a an example that a body may possess energy when it is not ...

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  6. (a) On what factors does the gravitational potential energy of a body ...

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  7. Give two examples where a body possesses both , kinetic energy as well...

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  8. How much is the mass of a man if he has to do 2500 joules of work in c...

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

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

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

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

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

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

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

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

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

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

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

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

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