if space force F of total magnitude 7N is acting in the space defined by positive X axis ,positive Y axis, negative Z axis, is having component Fx=2N, Fz=-6N, then Fy=?
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Given : space force F of total magnitude 7N is acting in the space defined by positive X axis ,positive Y axis, negative Z axis,
is having component Fx=2N, Fz=-6N
To Find: Fy
Solution:
| F | = √ (Fx)² + (Fy)² + (Fz)²
Squaring both sides
=> | F |² = (Fx)² + (Fy)² + (Fz)²
=> 7² = 2² + (Fy)² + (6)²
=> 49 = 4 + (Fy)² + 36
=> (Fy)² = 9
=> | Fy | = 3
Fy = 3 N as positive Y axis
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