A force is inclined at `30^(@)` to the horizontal. If its rectangular component in the horizontal direction is 50N, find the magnitude of the force and its vertical component.
Text Solution
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The correct Answer is:
To solve the problem step by step, we will follow the process of breaking down the force into its components and using trigonometric relationships.
### Step 1: Identify the given information
- The angle of inclination (θ) = 30 degrees
- The horizontal component of the force (F_horizontal) = 50 N
### Step 2: Use the relationship for the horizontal component
The horizontal component of the force can be expressed using the cosine of the angle:
\[ F_{\text{horizontal}} = F \cdot \cos(\theta) \]
Substituting the known values:
\[ 50 = F \cdot \cos(30^\circ) \]
### Step 3: Calculate cos(30 degrees)
We know that:
\[ \cos(30^\circ) = \frac{\sqrt{3}}{2} \]
### Step 4: Substitute cos(30 degrees) into the equation
\[ 50 = F \cdot \frac{\sqrt{3}}{2} \]
### Step 5: Solve for the magnitude of the force (F)
Rearranging the equation:
\[ F = \frac{50 \cdot 2}{\sqrt{3}} \]
\[ F = \frac{100}{\sqrt{3}} \]
### Step 6: Calculate the vertical component of the force
The vertical component can be expressed using the sine of the angle:
\[ F_{\text{vertical}} = F \cdot \sin(\theta) \]
### Step 7: Calculate sin(30 degrees)
We know that:
\[ \sin(30^\circ) = \frac{1}{2} \]
### Step 8: Substitute F and sin(30 degrees) into the equation
\[ F_{\text{vertical}} = \left(\frac{100}{\sqrt{3}}\right) \cdot \sin(30^\circ) \]
\[ F_{\text{vertical}} = \left(\frac{100}{\sqrt{3}}\right) \cdot \frac{1}{2} \]
\[ F_{\text{vertical}} = \frac{100}{2\sqrt{3}} \]
\[ F_{\text{vertical}} = \frac{50}{\sqrt{3}} \]
### Final Answers
- Magnitude of the force (F) = \( \frac{100}{\sqrt{3}} \) N
- Vertical component of the force = \( \frac{50}{\sqrt{3}} \) N
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