Solving an Energy Problem in AP Physics: Calculating Frictional Force

  • Thread starter Thread starter lrp3395
  • Start date Start date
  • Tags Tags
    Energy
Click For Summary
To solve the problem of calculating the frictional force when an object slides on a rough surface, it is essential to apply the work-energy principle. The net work done on the object is equal to the change in its kinetic energy, which is represented by the increase in KE "E." The work done by the applied force "F" over the distance "d" must be considered, alongside the work done against friction. By setting the net work equal to the change in kinetic energy, the frictional force can be determined. Understanding these relationships is crucial for solving energy problems in AP Physics.
lrp3395
Messages
4
Reaction score
0
While studying for my AP physics midterm i was looking back at old topics and came across a problem I'm having a lot of trouble with

If an object sliding on a rough surface experiences an increase in KE of "E" while being pushed by a constant force of "F" through a distance "d" what is the force due to friction
 
Physics news on Phys.org
Work is energy too.
 
The total (net) work is equal to the change in kinetic energy.
 
Thread 'What is the pressure of trapped air inside this tube?'
As you can see from the picture, i have an uneven U-shaped tube, sealed at the short end. I fill the tube with water and i seal it. So the short side is filled with water and the long side ends up containg water and trapped air. Now the tube is sealed on both sides and i turn it in such a way that the traped air moves at the short side. Are my claims about pressure in senarios A & B correct? What is the pressure for all points in senario C? (My question is basically coming from watching...

Similar threads

  • · Replies 9 ·
Replies
9
Views
2K
  • · Replies 6 ·
Replies
6
Views
2K
  • · Replies 138 ·
5
Replies
138
Views
8K
  • · Replies 10 ·
Replies
10
Views
2K
  • · Replies 4 ·
Replies
4
Views
3K
  • · Replies 7 ·
Replies
7
Views
886
  • · Replies 35 ·
2
Replies
35
Views
4K
  • · Replies 18 ·
Replies
18
Views
3K
  • · Replies 60 ·
3
Replies
60
Views
5K
  • · Replies 43 ·
2
Replies
43
Views
8K