Solving Quadratic Equation: Find x for k=3000, m=5, g=9.81, d=1.3

Click For Summary
SUMMARY

The discussion centers on solving a quadratic equation using the quadratic formula with specific parameters: k=3000, m=5, g=9.81, and d=1.3. The coefficients A, B, and C are defined as A=0.5*k, B=-m*g*sin(30), and C=-m*g*d*sin(30). Despite calculating a distance of 48.13, the initial poster faces confusion regarding the relationship between the variables and the absence of a clear quadratic formula. Participants emphasize the need for a precise problem statement to clarify the context of the equation.

PREREQUISITES
  • Understanding of the quadratic formula and its application
  • Familiarity with trigonometric functions, specifically sine
  • Basic knowledge of physics concepts such as force and distance
  • Ability to manipulate algebraic expressions
NEXT STEPS
  • Review the derivation and application of the quadratic formula in physics problems
  • Study the role of trigonometric functions in solving equations
  • Explore examples of quadratic equations related to projectile motion
  • Investigate how to clearly define problem statements in mathematical contexts
USEFUL FOR

Students in physics and mathematics, educators teaching quadratic equations, and anyone involved in solving real-world problems using algebraic methods.

mattmannmf
Messages
170
Reaction score
0
Using the quadratic formula, solve the distance:

x= distance needed to solve (also our y value in the formula)

A= .5*k

B= -m*g*sin(30)

C= -m* g* d*sin(30)

Where:
k= 3000
m= 5
g=9.81
d=1.3

I get 48.13, but it says that I am wrong. what does everyone else get?
 
Physics news on Phys.org
I can't see that what you've posted makes any sense. The distance from what to what? How are A, B, and C related to x? What is y in your formula? What formula?

Please post the exact problem description.
 
You title this "quadratic formula" and say "Using the quadratic formula" but there is NO quadratic formula in your post.

You say "x= distance needed to solve (also our y value in the formula)" and then give a list of formulas and values, none of which mention "x" or "y"!

WHAT is the question, really?
 

Similar threads

  • · Replies 16 ·
Replies
16
Views
5K
  • · Replies 10 ·
Replies
10
Views
4K
  • · Replies 6 ·
Replies
6
Views
3K
  • · Replies 2 ·
Replies
2
Views
2K
  • · Replies 11 ·
Replies
11
Views
3K
  • · Replies 30 ·
2
Replies
30
Views
9K
  • · Replies 7 ·
Replies
7
Views
8K
  • · Replies 4 ·
Replies
4
Views
3K
  • · Replies 3 ·
Replies
3
Views
14K
Replies
17
Views
7K