Determining Force & Direction of 6 kg Particle's Motion

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SUMMARY

The discussion focuses on determining the force and direction of motion for a 6 kg particle with a velocity defined by the equation v = (5ti + 4t²j) m/s. To find the net force, which has a magnitude of 43 N, participants are advised to derive the acceleration vector from the velocity vector using the relationship F = ma. The acceleration vector is essential for calculating both the net force direction and the particle's travel direction relative to the positive x-axis.

PREREQUISITES
  • Understanding of Newton's Second Law (F = ma)
  • Knowledge of vector calculus
  • Familiarity with kinematics and motion equations
  • Ability to differentiate functions with respect to time
NEXT STEPS
  • Derive the acceleration vector from the given velocity function v = (5ti + 4t²j)
  • Calculate the net force direction using the derived acceleration vector
  • Explore the relationship between force, mass, and acceleration in various contexts
  • Study the concept of momentum and its relation to force
USEFUL FOR

This discussion is beneficial for physics students, educators, and anyone interested in classical mechanics, particularly in understanding the dynamics of particle motion and force calculations.

soul5
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Homework Statement



The velocity of a 6 kg particle is given by v = (5ti + 4t2j ) m/s, with time t in seconds. At the instant the net force on the particle has a magnitude of 43 N, what are the direction (relative to the positive direction of the x axis) of (a) the net force and (b) the particle's direction of travel?

Homework Equations



F= ma



The Attempt at a Solution



I don't know what to do can someone give me a hint?
 
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If you're familiar with momentum, you'll notice that the rate of change of momentum is force (or you could simply note that the rate of change of velocity is acceleration). Just derive the acceleration vector from the velocity vector.
 

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