ylopez

Most popular questions and responses by ylopez
  1. Physics

    A uniform 100-N pipe is used as lever. Where the fulcrum (the support point) must be placed if a 500-N weight at one end is to balance a 200-N weight at the other end? What is the reaction force exerted by the support on the pipe?

    asked on July 7, 2016
  2. Physics

    When a force of 500 N pushes on a 25-kg box, the acceleration of the box up the incline is 0.75 m/s^2. If the inclined plane makes an angle of 40 degrees relative to the horizontal level, what is the coefficient of kinetic friction?

    asked on July 4, 2016
  3. Physics

    Randy pushes a 30.0 kg box resting on a rough surface by exerting a force of 85.0 N. The box did not move. What is the coefficient of static friction between the box and the surface where it lies?

    asked on July 4, 2016
  4. Physics

    A 20 kg slab is to be pulled up a plane inclined 20 degrees with the horizontal at a constant speed by a force that is directed 15 degrees above the surface of the inclined plane. Determine the magnitude of the force necessary to perform the task. The

    asked on July 4, 2016
  5. Physics

    A box with a mass of 10 kg slides along a horizontal surface. A force of 50 N is needed to keep it moving. What is the coefficient of kinetic friction?

    asked on July 4, 2016