Solve Forces & Graphs Physics Problem | RCXD Acceleration

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SUMMARY

The discussion centers on solving a physics problem involving the acceleration of an RCXD vehicle on a slope. The vehicle has a mass of 5 kg, a driving force of 300 N, and a friction force of 100 N. To determine the acceleration, Newton's second law (Ftotal = ma) is applied, considering the net force acting on the vehicle. The correct approach involves calculating the total forces, including the weight component acting down the slope.

PREREQUISITES
  • Understanding of Newton's second law (Ftotal = ma)
  • Knowledge of forces acting on an object (driving force, friction, weight)
  • Basic trigonometry for resolving forces on an incline
  • Familiarity with units of force (Newtons)
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  • Study the application of Newton's second law in dynamics problems
  • Learn how to resolve forces on inclined planes
  • Explore the concept of net force and its calculation
  • Practice problems involving friction and driving forces
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Thepotatis
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So the problem is that i have a physics test coming up and its about forces and graphs.
The teacher can not explain the different formulas clearly which results in everyone getting bad grades. I wonder if anyone can explain this to me.

Homework Equations


A RCXD (a little car with explosives controlled by a joystick) drives down a hill with an angle of 30°. Its mass = 5kg. What is its acceleration if the driving force ( force motrice in french) = 300[N] and the friction = 100[N]?

The Attempt at a Solution



FM (driving force) -f (friction) = 0 ?
300-200 = 0 -> 100 = 0 so not possible >.<
 
Last edited:
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Welcome to PF!

Hi Thepotatis! Welcome to PF! :wink:

Nearly all dynamics questions are solved by applying good ol' Newton's second law (Ftotal = ma), in one or more directions …

in this case, there are at least three forces making up Ftotal: the driving force, the friction, and the weight :smile:
 

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