Kinetic Friction with an upward shove

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SUMMARY

The discussion centers on calculating the acceleration of a block on an inclined plane with a coefficient of kinetic friction of 0.17 at an angle of 55°. The user has determined that the acceleration while sliding down is 7.079 m/s². However, they are seeking the correct acceleration when the block is given an upward shove and is still sliding up the slope. Previous attempts at calculating this acceleration yielded incorrect results of 8.036 m/s² and 7.079 m/s².

PREREQUISITES
  • Understanding of Newton's laws of motion
  • Knowledge of friction coefficients and their impact on motion
  • Familiarity with inclined plane physics
  • Ability to perform vector resolution of forces
NEXT STEPS
  • Calculate the net force acting on the block using the formula F_net = m*g*sin(θ) - f_k, where f_k is the kinetic friction force.
  • Learn how to apply the equation a = F_net/m to find the block's acceleration in both upward and downward motions.
  • Explore the effects of varying the angle of inclination on the block's acceleration.
  • Investigate the role of different coefficients of kinetic friction in similar scenarios.
USEFUL FOR

Students studying physics, particularly those focusing on mechanics involving inclined planes and friction, as well as educators looking for practical examples of these concepts.

lauriecherie
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Homework Statement


In the figure below, the coefficient of kinetic friction between the block and inclined plane is 0.17 and angle θ = 55°. What is the block's acceleration (magnitude and direction) assuming the following conditions? (b) It has been given an upward shove and is still sliding up the slope.
I also figured out that the accelertaion (magnitude and direction) when it is sliding down. That answer is 7.079 m/s^2


Homework Equations





The Attempt at a Solution



I've tried 8.036 & 7.079 m/s^2. Both were incorrect :(
 
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Hi lauriecherie,

lauriecherie said:

Homework Statement


In the figure below, the coefficient of kinetic friction between the block and inclined plane is 0.17 and angle θ = 55°. What is the block's acceleration (magnitude and direction) assuming the following conditions? (b) It has been given an upward shove and is still sliding up the slope.
I also figured out that the accelertaion (magnitude and direction) when it is sliding down. That answer is 7.079 m/s^2


Homework Equations





The Attempt at a Solution



I've tried 8.036 & 7.079 m/s^2. Both were incorrect :(


What did you do to get those answers?
 

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