Physics

posted by .

If the coefficient of kinetic friction between a 35 kg crate and the floor is 0.30, what horizontal force is required to move the crate at a steady speed across the floor? What horizontal force is required if μk is zero?

  • Physics -

    a. Fc=m*g = 35kg * 9.8 N/kg = 343 N @ 0o
    = Force of crate.
    Fp = 343*sin(0) = 0 = Force parallel to
    floor.
    Fv = 343*cos(0) = 343 N. = Force perpendicular to floor.

    Fk = u*Fv = 0.3*343 = 103 N. = Force of
    kinetic friction.

    Fn = Fx-Fp-Fk = ma.
    Fx - 0 - 103 = m*0 = 0
    Fx = 103 N. = Hor. force applied.

    b. Fx - Fp = 0
    Fx - 0 = 0
    Fx = 0.

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

  1. 11th grade

    If the coefficient of kinetic friction between a 30 kg crate and the floor is 0.35, what horizontal force is required to move the crate at a steady speed across the floor?
  2. physics

    If the coefficient of kinetic friction between a 37 kg crate and the floor is 0.31, what horizontal force is required to move the crate at a steady speed across the floor?
  3. physics

    if the coefficient of kinetic friction between a 35-kg crate and the floor is 0.30, what horizontal force is required to move the crate at a steady speed across the floor?
  4. physics

    To move a large crate across a rough floor, you push on it with a force F at an angle of 21°, below the horizontal, as shown in the figure. Find the acceleration of the crate, given that the mass of the crate is m = 38 kg, the applied …
  5. physics

    A dockworker loading crates on a ship finds that a 21-kg crate, initially at rest on a horizontal surface, requires a 70-N horizontal force to set it in motion. However, after the crate is in motion, a horizontal force of 51 N is required …
  6. Physics

    If the coefficient of kinetic friction between a 36 kg crate and the floor is 0.31, what horizontal force is required to move the crate at a constant velocity (so that FNET=0.0 N) across the floor?
  7. Physics

    1. To move a large crate across a rough floor, you push on it with a force F at an angle of 21° below the horizontal. The mass of the crate is 32.0 kg. The coefficients of static and kinetic friction are 0.62 and 0.42 respectively. …
  8. Physics

    If the coefficient of kinetic friction between a 32.7 kg crate and the floor is 0.295, what horizontal force is required to move the crate at a steady speed across the floor?
  9. Physics

    A crate of mass 100kg is at rest on a horizontal floor. The coefficient of static friction between the crate and the floor is 0.4, and the coefficient of kinetic friction is 0.3. A horizontal force, F, or magnitude 350N is applied …
  10. Physics Force and Friction question

    A crate of mass 100kg is at rest on a horizontal floor. The coefficient of static friction between the crate and the floor is 0.4, and the coefficient of kinetic friction is 0.3. A horizontal force, F, or magnitude 350N is applied …

More Similar Questions