How Do I Solve Angle Problems in Physics?

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In summary, the conversation is about a student needing help with three problems that were not covered in class and involve angles and pulleys. The student is seeking assistance with understanding how to approach the problems. They also mention that for problem 12, the calculations may involve finding the horizontal and vertical components of a force.
  • #1
bradycat
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Attached are 3 problems that we were never shown in class on how to do it. I have a test in 3 days and need to figure this out, and no more class time.

Question 10 12 and 13.
We NEVER did anything with angles in it. And nothing like pulleys this way either.

As for 12 I see you have to do a Em on a point, then solve via Efx=0 and Efy=0 I guess.

Any help to get me started would be great, ANY HELP!.

Thank you
 

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  • #2
I have not done these types of problems in a while but your question about angles, well you would solve the problems same way but in the calculation instead of having
example hale was hitting a window at a 45degree with speed 5km/s . the the speed would really be 5sin45 or 5cos45 depending on the direction or something its something like that.
 

FAQ: How Do I Solve Angle Problems in Physics?

How do I find the missing angle in a triangle?

To find the missing angle in a triangle, you can use the fact that the sum of all angles in a triangle is always 180 degrees. So if you know the measurement of two angles, you can subtract their sum from 180 to find the missing angle.

How do I use the Law of Sines to solve for angles?

The Law of Sines states that the ratio of the sine of an angle to the length of the side opposite that angle is constant for all angles and sides in a triangle. So to solve for an angle using the Law of Sines, you can set up a proportion and use trigonometric functions to find the angle.

How do I use the Law of Cosines to solve for angles?

The Law of Cosines states that the square of one side of a triangle is equal to the sum of the squares of the other two sides, minus twice the product of those sides and the cosine of the included angle. To solve for an angle using the Law of Cosines, you can rearrange the equation and use inverse trigonometric functions to find the angle.

How do I solve for angles in a right triangle?

In a right triangle, one angle is always 90 degrees. To solve for the other angles, you can use the Pythagorean Theorem and trigonometric functions such as sine, cosine, and tangent.

How do I use the unit circle to solve for angles?

The unit circle is a circle with a radius of 1, centered at the origin of a Cartesian coordinate system. It is often used in trigonometry to find the values of sine, cosine, and tangent for different angles. By memorizing the values of these trigonometric functions for special angles on the unit circle, you can easily solve for angles in more complex problems.

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