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the sum of magnitudes of two forces acting at a point is 18N and the magnitude of their resultant is 12N. if the resultant makes an angle of 90 degree with the force of smaller magnitude find the magnitudes of the two forces.

```
4 years ago

Vikas TU
14146 Points
```							let a and b ve the forces whose sum is given as:a + b = 18.....................................(1)root(a^2 + b^2 + 2abcosthetha) = 12.........................(2)cos90 = R.b/|R||b|.i.e.R.b = 0 (a+b).b = 0 ora.b = -|b|^2................(3)use these 3 eqns. and solve for a,b, and costhetha.
```
4 years ago
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### Course Features

• 110 Video Lectures
• Revision Notes
• Test paper with Video Solution
• Mind Map
• Study Planner
• NCERT Solutions
• Discussion Forum
• Previous Year Exam Questions