Dynamics - Unbalanced Force - Probably Very Easy

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SUMMARY

The discussion centers on a dynamics problem involving the calculation of an angle using the tangent function. The user initially struggles to compute the angle, which is derived from the ratio of the opposite side (5.0 N) to the adjacent side (7.0 N), resulting in an angle of 36 degrees. The confusion arises from the calculator being set to radian mode instead of degree mode. Once the user switches to degree mode, they successfully obtain the correct angle.

PREREQUISITES
  • Understanding of basic trigonometric functions, specifically tangent.
  • Familiarity with calculator settings, particularly degree and radian modes.
  • Basic knowledge of dynamics and forces in physics.
  • Ability to interpret and solve simple physics problems involving angles.
NEXT STEPS
  • Learn how to use trigonometric functions in physics problems.
  • Research the differences between degree and radian measures in trigonometry.
  • Explore common dynamics problems involving forces and angles.
  • Practice using scientific calculators for trigonometric calculations.
USEFUL FOR

Students studying physics, particularly those beginning dynamics, and anyone needing to understand trigonometric calculations in practical applications.

AnthonyC
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Hi again,

we're starting dynamics now and the example problem in the book is very confusing, I don't understand how they got their answer.

tanΘ = opposite/adjacent
= 5.0 N/7.0 N
= 36 degrees

It must be very simple, but I can't get 36 degrees when I try it.

What do I need to input into my calculator to receive this answer?
 
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Oops! I figured it out, I hadn't put my calculator into degree mode!
 
Good to hear it was only something simple. I used to get stuck for ages wondering why my answers were coming out funny.
 

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