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Scalar and Vector :: Discussion
| 7. | Two forces whose magnitudes are in ratio of 3:5 give a resultant of 35N. If the angle of inclination is 60°, calculate the magnitude of each force. | |
| A. | 15N and35N | |
| B. | 15N and 25N | |
| C. | 10N and 15N | |
| D. | 20N and 5N | |
| Answer: Option B | |
| Explanation: | |
|
P = 3x and Q = 5x R = 35N θ = 120° R = P2+R2+2PQcosθ−−−−−−−−−−−−−−−−√ 35 = 7x or x = 35/7 = 5 P = 15N Q = 25N. |
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