Physics

posted by .

I have a follow-up to my question at 4:10 about work because I still can't figure it out.

F-F(friction)=ma
F-F(friction)=2*3
F-2.5=2*3
F=2*3 + 2.5
W=Fd
W=(2*3 + 2.5)4
Distributing the "4" I get
W=2*3*4 +2.5*4
Please help in pointing out where I have gone wrong. Thanks

  • Physics -

    You are correct, that is right. I typed the distance wrong on the friction term.

  • Physics -

    Thank you so much!!!

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

  1. Physics (Bob please read)

    hey bob, this question average force of friction thanks a lot. i only don't get one part. Now, set the potential energy of the rubber band (stretched x cm) equal to the work done on friction why is this equal to work done by friction?
  2. Physics

    the only part i cant figure out is the max static friction force that acts on the block. please help show me how to find it Suppose a block with mass 2.00 kg is resting on a ramp. If the coefficient of static friction between the block …
  3. Physics

    You want to push a 66-kg box up a 30° ramp. The coefficient of kinetic friction between the ramp and the box is 0.35. With what magnitude force parallel to the ramp should you push on the box so that it moves up the ramp at a constant …
  4. Physics

    You want to push a 66-kg box up a 30° ramp. The coefficient of kinetic friction between the ramp and the box is 0.35. With what magnitude force parallel to the ramp should you push on the box so that it moves up the ramp at a constant …
  5. Dynamic

    A block of mass m is released from a height of R. The block slides down along the path ABC. At point C the block collides a spring of sti ness k. (a) If the circular arc AB is frictionless and the coecient of kinetic friction between …
  6. Physics

    A 2.32 kg block slide down a ramp from a height of 4.19 m. The block has a speed of 3.25 m/s when it reaches the bottom. There is friction. What is the work (in J) done by gravity?
  7. Physics

    A cup of coffee is on a table in an airplane flying at a constant altitude and a constant velocity. The coefficient of static friction between the cup and the table is 0.420 . Suddenly, the plane accelerates forward, its altitude remaining …
  8. PHYSICS EXAM PRACTICE QUESTION

    2. A force of 2300 N [E] acts on a 900 kg car for 8 s. At the same time a friction force of 600 N [W] acts. What will the final speed of the car be?
  9. Physics

    Hello, Could anyone help me with something about rolling motion?
  10. Physics 11

    A 62kg cyclist changes the speed of a 12kg bicycle from 8.2m/s to 12.7m/s. Determine the work done. I've already answered & gotten this question correct, however it made me confused about the concept. I found Ek. & Ek to find change …

More Similar Questions