I dont know if this is advanced or not but help needed

  • #1
someone is puchsing a box across a floor at a constant velocity. The coefficient of kinetic friction is .41. THe pushing force is directed downward at an angle below the horizontal. If the angle is greater then a certain value then no matter the force the box can not be moved. What is this angle.

I really have no clue where to start
 

Answers and Replies

  • #2
13
0
Here's a tip:

I really have no clue where to start
First you need to draw a force diagram for the box and from there, solve for the Normal Force. Is the magnitude of the force on the box given in the problem?
 
  • #3
mjsd
Homework Helper
726
3
then think about under how the net force of the system may becomes zero (ie. box doesn't accelerate)
 

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