1. Questions

PHYSICS

A 4 kg block is pushed along the ceiling with a constant applied force of 85 N that acts at an angle of 55 degrees with the horizontal. The block accelerates to the right at 6 m/s^2. determine the coefficient of kinetic friction between the block and the ceiling.

The applied force in the direction of motion is 85 cos 55 = 48.75 N

The friction force that acts opposite to the direction of motion is

(F sin55 - M g)* (mu,k)

To solve for (mu,k), the coefficient of kinetic friction, solve the Newton's Second Law equation

Fnet = F cos55 -F sin55 + M g(mu,k]
= M a

You already know F, M, g and a.

  1. 👍
  2. 👎
  3. 👁
  4. ℹ️
  5. 🚩
Christy

  1. 1.14

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

  2. 3.55

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

  4. 4.00 kg block is pushed along
    the ceiling with a constant
    applied force of 85.0 N that acts
    at an angle of 55.0° with the
    horizontal, as in the figure. The block accelerates to the right at 6.00 m/s2. Determine the coefficient of kinetic friction between the block and the ceiling.

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

  5. 4.00 kg block is pushed along
    the ceiling with a constant
    applied force of 85.0 N that acts
    at an angle of 55.0° with the
    horizontal, as in the figure. The block accelerates to the right at 6.00 m/s2. Determine the coefficient of kinetic friction between the block and the ceiling.

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

Respond to this Question

First Name

Your Response

Similar Questions

  1. Physics

    A block of weight = 25.0 N sits on a frictionless inclined plane, which makes an angle = 34.0 with respect to the horizontal, as shown in the figure. A force of magnitude = 14.0 N, applied parallel to the incline, is just

  2. physics

    Two blocks are pushed along a horizontal frictionless surface by a force of 20 newtons to the right. The force acts on the 3 kg block, which in turn pushes the 2kg block sitting next to it. The force that the 2-kilogram block

  3. physics

    a force F is applied in horizontal to a 10kg block. the block moves at a constant speed 2m/s across a horizontal surface. the coefficient of kinetic friction between the block and the surface is 0.5. the work done by the force F

  4. Physics

    A block of mass 3m is placed on a frictionless horizontal surface, and a second block of mass m is placed on top of the first block. The surfaces of the blocks are rough. A constant force of magnitude F is applied to the first

  1. physics

    The block in the figure below lies on a horizontal frictionless surface and is attached to the free end of the spring, with a spring constant of 65 N/m. Initially, the spring is at its relaxed length and the block is stationary at

  2. Mechanics

    A 30.0-kg block is resting on a flat horizontal table. On top of this block is resting a 15.0-kg block, to which a horizontal spring is attached, as the drawing illustrates. The spring constant of the spring is 325 N/m. The

  3. Physics

    A block of mass m = 2.00 kg rests on the left edge of a block of mass M = 8.00 kg. The coefficient of kinetic friction between the two blocks is 0.300, and the surface on which the 8.00- kg block rests is frictionless. A constant

  4. physics

    A 5.3-kg block is pushed 2.3 m up a vertical wall with constant speed by a constant force of magnitude F applied at an angle of θ = 30° with the horizontal, as shown in the figure below. If the coefficient of kinetic friction

  1. Physics

    A grocery cart with a mass of 18 kg is pushed at constant speed along an aisle by a force F = 12 N. The applied force acts at a 20° angle to the horizontal. Find the work done by each of the forces on the cart if the aisle is 14

  2. Physics ASAP

    A block of weight 20 N is pushed with a force of 30 N through a horizontal distance of 5 m using a stick which is at an angle of 37° from the horizontal as shown. The coefficient of kinetic friction µk between the table and the

  3. Physics

    A 4.0 kg block is stacked on top of a 12.0 kg block, whcih is accelerating along a horizontal table at a = 5.2 s^-2 m. Let Mu k = Mu s = Mu. (a) What mininum coefficent of friction Mu between the two blocks will prevent the 4.0 kg

  4. science

    A 4.0-kg block and a 2.0-kg block are connected to opposite ends of a relaxed spring of spring constant 300 N/m. The blocks are pushed toward each other for 0.5 s. The 4.0-kg block is pushed with a force of 53 N , and the 2.0-kg

View more similar questions or ask a new question.