Physical Science

posted by .

The static frictional between a 500 kilogram box of bricks and the floor is 500 Newton’s. The kinetic frictional force in only 220 Newton’s. How many Newton’s of force must a worker exert to get the moving?

  • Physical Science -

    you need 500 N to overcome the static friction

    as is frequently the case; once something starts, it is easier to keep it moving

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

  1. physics

    A box,is resting on a smooth(frictionless)table.The mass of the box is 10 kg. (a)Determine the weight of the box and the normal force acting on(b)If the box is pushed down with a force of 40 Newton determine the normal force(c) If …
  2. physical science explorations

    find the net force produced by a 40 newton force and a 50 Newton force in each of the following cases 1. both forces ast in the same direction. 2. both forces act in opposite directions.
  3. science

    a teacher pushed a 98 newton desk acrosss a floor for a distance of 5 meters she exerted a horizontal force of 20 newton How much work was done?
  4. physics

    at what angle must the two forces of 50 newton and 120 newton be acting so as to balanced by a force of 130 newton?
  5. Physical Science

    If the strength of gravity is 9.8 newtons per kilogram, that means: a. each newton of force equals 9.8 pounds. b. each pound of force equals 9.8 newtons. c. each newton of mass weighs 9.8 kilograms d. each kilogram of mass weighs 9.8 …
  6. physics

    if a 30 newton force is required to accelerate a 2kg object at 10m/s2, over a level floor, what is the magnitude of the frictional force acting on the object
  7. Physical science

    A box a weight of 100 N rests on a horizontal floor.The coefficient of static friction is 0,40 and the coefficient of kinetic friction is 0,30.DETERMISE THE FRICTIONAL FORCE ACTING ON THE BOX IF A HORIZONTAL FORCE IS APPLIED WITH A …
  8. physics

    A uniform bar 25 meters long weighs 10,000 Newton's. From end A weight of 2500 Newton's is hung. At B the other end of the bar, there is a weight of 3500 Newton's. An upward force of 3000 Newton's is exerted 4 meters from B, while …
  9. physical science

    A 8.kg box is sliding across the horizontal floor of an elevator the coefficient of kinetic friction between the box and the floor is 0.310. Determine the kinetic frictional force that acts on the box when the elevator is accelerating …
  10. PHYSICS

    A 100 kg box on the right and a 50 kg box on the left are tied together by a horizontal cable. The 100 kg box is acted upon by an external force of 500 N to the right. The frictional force exerted by the floor on the 100 kg box is …

More Similar Questions