physics

posted by .

what is the value for k if a spring stretches 0.4m when submitted to a 1800N force?


How much force is needed to keep a 23 kg box moving at a constant velocity across a warehouse floor if the coefficient of friction between the box and the floor is 0.88?

  • physics -

    Both of these are straightforward uses of standard formulas. I will be happy to critique your thinking.

  • physics -

    i'm not very good at physics

    for the first one do i use the formula F=-Kx to make the answer -4500 ?

    and for the second i really have no idea what formula to use

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

  1. physics

    because of friction, a constant force of 20 N is needed to slide a box across a room to the right at a constant speed, and box is moved 3 m. What is the friction force and how much work is done by friction force?
  2. Physics 204

    I have a few questions. 1.The coefficient of sliding friction between steel skate blades and ice is .05. How much force must be applied to a 150lb. skater to maintain a constant velocity?
  3. physics

    i'm not very good at physics and i have an exam tomorrow!! for the first one do i use the formula F=-Kx to make the answer -4500 ?
  4. physics

    You are pushing a 30-kg wooden crate across the floor. The force of sliding friction on the cate is 90 N. How much force, in newtons, must you exert on the crate to keep it moving with constant velocity?
  5. Physics

    A warehouse worker exerts a constant horizontal force of magnitude 89.0 N on a 43.0 kg box that is initially at rest on the horizontal floor of the warehouse. When the box has moved a distance of 1.60 m, its speed is 1.10 m/s. What …
  6. physics

    suppose a box is sliding along the floor,and friction is resisting its motion with a force of 160n.how much force do you need to exert to keep the box moving at a constant velocity?
  7. Physics

    an 88kg cardboard box is being pulled along a level floor. the coefficient of static friction between the box and the floor is 0.23, and the sliding friction is 0.12. What is the weight of the box?
  8. physics

    While moving in, a new homeowner is pushing a box across the floor at a constant velocity. The coefficient of kinetic friction between the box and the floor is 0.25. The pushing force is directed downward at an angle θ below the …
  9. Physics

    While moving in, a new homeowner is pushing a box across the floor at a constant velocity. The coefficient of kinetic friction between the box and the floor is 0.27. The pushing force is directed downward at an angle θ below the …
  10. physics

    A force of 55 N at an angle of 32 degrees to the horizontal is applied to drag a 15kg box across a horizontal floor at a velocity of 2.5 m/s. The coefficient of friction between the box and the floor is 0.25 and the box is moved 15m …

More Similar Questions