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The force ‘F’ acting on a particle of mass ‘m’ is indicated by the force-time graph shown below. The change in momentum of the particle over the time interval from zero to 8 s is :[2014]
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- 24 Ns
- 20 Ns
- 12 Ns
- 6 Ns
Correct Option: C
Change in momentum,
∆p= ∫Fdt
= Area of F-t graph
= ar of ∆ – ar of ☐ + ar of ☐
| = | &time; 2 × 6 - 3 × 2 + 4 × 3 = 12 N-s | |
| 2 |
