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प्रश्न
How is work done by a force measured when the force is in an angle to the direction of displacement?
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उत्तर
When the displacement is in the direction making an angle θ with the direction of force,
Work done = Component of force in the direction of displacement x displacement
∴ W = F × S cos θ
संबंधित प्रश्न
How is the work done by a force measured when the force is in the direction of displacement?
A force F acts on a body and displaces it by a distance S in a direction at an angle θ with the direction of force.
Write the expression for the work done by the force.
A body is acted upon by a force. State two conditions when the work done is zero.
A force F acts on a body and displaces it by a distance S in a direction at an angle θ with the direction of force.
What should be the angle between force and displacement so that the work done is
- Zero
- Maximum
From the groups B and C, choose the proper words, for each of the words in group A.
| A | B | C |
| Work | Newton | erg |
| Force | Metre | cm |
| Displacement | Joule | dyne |
Explain the following concept in your own words with everyday examples:
Force
Explain the following concept in your own words with everyday examples:
Work
Explain the following concept in your own words with everyday examples:
Displacement
What should be the angle between the direction of force and the direction of displacement, for work to be negative?
A body, when acted upon by a force of 20 kgf, gets displaced by 1 m. Calculate the work done by the force, when the displacement is
- in the direction of force,
- at an angle of 60° with the force, and
- normal to the force. (g = 10 N kg-1)
