Physics

posted by .

An object of mass 20kg slides down an inclined plane at an angle of 30 degree to the horizontal. The coefficient of static friction is?

  • Physics -

    If 30 degrees is the minimum angle that allows slipping to start, then the coefficient of static friction (mu_s) is given by

    M*g*sin30 = M*g*mu_s*cos30
    mu_s = tan30 = 0.5774

    The mass M does not matter.

    Angles greater than 30 degrees will also allow slipping.

  • Physics -

    0.5774

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

  1. physics

    An object of mass 10.0 kg is released from the top of an inclined plane which makes an angle of inclination of 30 degrees with the horizontal. The object slides along the inclined plane. The questions refer to the instant when the …
  2. Physics

    A 4.6-kg block slides down an inclined plane that makes an angle of 26° with the horizontal. Starting from rest, the block slides a distance of 2.6 m in 4.9 s. Find the coefficient of kinetic friction between the block and plane.
  3. Physics

    A 4.3-kg block slides down an inclined plane that makes an angle of 26° with the horizontal. Starting from rest, the block slides a distance of 2.1 m in 5.1 s. Find the coefficient of kinetic friction between the block and plane.
  4. Physics

    a 25 kg box is released from rest on a rough inclined plane tilted at an angle of 33.5 degrees to the horizontal. The coefficient of kinetic friction between the box and the inclined plane is 0.200. a. determine the force of kinetic …
  5. physics

    a 25.0kg box is released from rest on a rough inclined plane tilted at an angle of 33.5 degrees to the horizontal. the coefficient of kinetic friction between the box and the inclined plane is 0.200. determine the force of kinetic …
  6. physics work and newton

    A 2.0 kg object starts from rest from the top of an inclined plane that makes an angle of 30 degrees with the horizontal and has a rise of .4m. It slides down the inclined plane and at the bottom has a kinetic energy of 60J. Ignore …
  7. uos

    A 2.0-kg object starts from rest from the top of an inclined plane that makes an angle of 30° with the horizontal and has a rise of 0.40 m. It slides down the inclined plane and at the bottom has a kinetic energy of 60 J. Ignore friction …
  8. Physics

    A 4.0-kg block slides down an inclined plane that makes an angle of 25° with the horizontal. Starting from rest, the block slides a distance of 2.5 m in 5.4 s. Find the coefficient of kinetic friction between the block and plane.
  9. Physics

    A wooden block of mass 9 kg is at rest on an inclined plane sloped at an angle theta from the horizontal. The block is located 5 m from the bottom of the plane. A) Find the frictional force for theta = 20 B)If the angle is increased …
  10. Physics

    An object of mass 10kg is placed on an inclined plane at 30 degree to the horizontal. Calculate the reaction between two surface and what is the coefficient of static friction.

More Similar Questions