Ask questions and get helpful answers.
Ask a New Question
  1. Questions
  2. Physics

Two workers are sliding 360 kg crate across the floor. One worker pushes forward on the crate with a force of 380 N while the other pulls in the same direction with a force of 280 N using a rope connected to the crate. Both forces are horizontal, and the crate slides with a constant speed. What is the crate's coefficient of kinetic friction on the floor?

  1. 👍
  2. 👎
  3. 👁
  4. ℹ️
  5. 🚩
John
2 answers

  1. the crate is not accelerating
    ... so the frictional force equals the forces of the workers

    m * g * μ = 380 N + 280 N ... μ = 660 / (360 * 9.8)

    1. 👍
    2. 👎
    3. ℹ️
    4. 🚩
    R_scott

  2. Mg = 360*9.8 = 3528 N. = Wt. of crate = Normal force, Fn.
    380+280 = 660 N. = Force applied.
    u*Fn = u*3528 = Force of kinetic friction.

    660-3528u = M*a
    660-3528u = M*0 = 0
    u = 660/3528.

    1. 👍
    2. 👎
    3. ℹ️
    4. 🚩
    henry2,

Answer this Question

Related Questions

  1. physics

    A 100-kg crate, sliding on the floor, is brought to a stop by a 25-n force. What is the deceleration of the crate?

  2. Physics

    A 1000N crate is being pushed across a level floor at a constant speed by a force F of 300N at an angle of 20.0 degrees. (a) What is the coefficient of kinetic friction between the crate and the floor? (b) If the 300-N force is instead pulling the block at

  3. physics

    a body of mass 25kg moving at 3m/s on a rough horizontal floor is brought to rest after sliding through a distance of 2.5m on the floor. calculate the coefficient of sliding friction.

  4. statistics

    The Information Systems Audit and Control Association surveyed office workers to learn about the anticipated usage of office computers for personal holiday shopping. Assume that the number of hours a worker spends doing holiday shopping on an office

  5. Physics

    A 800 N crate is being pulled across a level floor by a force F of 320 N at an angle of 29° above the horizontal. The coefficient of kinetic friction between the crate and the floor is 0.25. Find the magnitude of the acceleration of the crate.

  6. Physics

    A worker pushes 25Kg crate a distance of 5m along a level floor at constant velocity by pushing horizontally on it. The coefficient of kinetic frication between the crate and the floor is 0.23. (a) What magnitude of force must the worker apply? (b) How

  7. Physics help please

    A crate is dragged 5.0 along a rough floor with a constant velocity by a worker applying a force of 125N to a rope at an angle of 30degrees to the horizontal. Calculate the work done by the tension in the rope, the force of friction, and the net force. I

  8. Physics

    I was wondering if my answers are correct. Thanks in advance. 1. A boy pushes down on a car rolling horizontally down the road. The boy pushes down vertically with 10N of force as the car rolls 3.0m horizontally. What work is done? my answer: 30 N•m (or

  9. Physics

    A block of mass 35kg is on a flat floor with a static friction coefficient of 0.36 and a kinetic friction coefficient of 0.29. A person attempts to slide the box from rest in a forward direction . Find the maximum frictional force experienced and the

  10. PHYSICS

    A 50.5-kg crate rests on a level floor at a shipping dock. The coefficients of static and kinetic friction are 0.624 and 0.364, respectively. What horizontal pushing force is required to (a) just start the crate moving and (b) slide the crate across the

Still need help?

You can ask a new question or browse existing questions.