Get comprehensive solutions to your questions with the help of IDNLearn.com's experts. Get timely and accurate answers to your questions from our dedicated community of experts who are here to help you.

Rewrite the following expression so that it is easier to read.
Fix any grammar or spelling errors.
Do not remove or change LaTeX formatting.
Do not change or remove [tex] [/tex] tags.
If the expression is nonsense, rewrite it so that it makes sense.
-----

[tex]\[ 9.8 \sin 30^{\circ} - 0.30 \left(9.8 \, \frac{m}{s^2}\right) \cos \theta \][/tex]


Sagot :

Let's solve the problem step-by-step.

1. Identify the given values:
- The acceleration due to gravity, [tex]\( g = 9.8 \, \text{m/s}^2 \)[/tex]
- The angle, [tex]\( \theta = 30^\circ \)[/tex]
- The coefficient of friction, [tex]\( \mu = 0.30 \)[/tex]

2. Convert the angle from degrees to radians:
[tex]\[ \theta_{\text{rad}} = 30^\circ \times \frac{\pi}{180^\circ} = \frac{\pi}{6} \, \text{radians} \][/tex]

3. Calculate the sine and cosine of the angle:
[tex]\[ \sin(30^\circ) = \frac{1}{2} \][/tex]
[tex]\[ \cos(30^\circ) = \frac{\sqrt{3}}{2} \][/tex]

4. Compute the components separately:

- Sin component:
[tex]\[ g \sin(30^\circ) = 9.8 \times \frac{1}{2} = 4.9 \, \text{m/s}^2 \][/tex]

- Cos component:
[tex]\[ \mu g \cos(30^\circ) = 0.30 \times 9.8 \times \frac{\sqrt{3}}{2} \approx 0.3 \times 9.8 \times 0.866 = 2.5461 \, \text{m/s}^2 \][/tex]

5. Subtract the cosine component from the sine component:
[tex]\[ 4.9 - 2.5461 \approx 2.3539 \, \text{m/s}^2 \][/tex]

Thus, the final results are:
- The sine component: [tex]\( 4.9 \, \text{m/s}^2 \)[/tex]
- The cosine component: [tex]\( 2.5461 \, \text{m/s}^2 \)[/tex]
- The resulting value after subtraction: [tex]\( 2.3539 \, \text{m/s}^2 \)[/tex]

So, the steps clearly show how we arrive at the final values.