Physics

What value of F can pull the 5.00 kg box at constant velocity up the incline if uk=0.25. u means coeffiient friction
the angle is 30 degrees and 5.00 kg force is going up


Break up the weight of the box into two components: Perpendicular to the slope, and down the slope. Down the slope the box is mg*SinTheta, and perpendicular to the slope is mg*CosTheta. These two give you all you need here.

Net force up the slope= F - mgSinTheta -friction

where friction = uk*Forceperpendicular.

To pull at constant veloctiy, acceleration is zero, and then Net Force is zero. So..
F - mgSinTheta -friction=0
and you solve for F.

  1. 👍 0
  2. 👎 0
  3. 👁 198

Respond to this Question

First Name

Your Response

Similar Questions

  1. physics

    a girl is using a rope to pull a box that weighs 300N across a level surface with constant velocity. the rope makes an angle of 30 degree above the horizontal and the tension in the rope is 100N. What is the normal force of the

  2. physics

    You are a member of an alpine rescue team and must get a box of supplies, with mass 3.00kg , up an incline of constant slope angle 30.0∘ so that it reaches a stranded skier who is a vertical distance 2.90m above the bottom of

  3. physics

    A 20.0 kg box slides down a 12.0 m long incline at an angle of 3.0 degrees with the horizontal. A force of 50.0 N is applied to the box to try to pull it up the incline. The applied force makes an angle of 0.00 degrees to the

  4. physics

    a mule uses a rope to pull a box that weighs 3.0x10^2N across a level surface with a constant velocity. the rope makes an angle of 30.0 degrees above the horizontal and the tension in the rope is 1.0x10^2N. what is the normal

  1. physics

    a box with mass 20kg rests on a frictionless ramp with a 15degree slope. a mover pulls up on a rope attached to the box to pull it up the incline. if the rope makes a 40 degree angle with the horizontal, what's the smallest force

  2. physical

    A box slides downwards at a constant velocity on an inclined surface that has a coefficient of friction uK = .58 The angle of the incline, in degrees?

  3. physics

    A constant horizontal pull of 8.25 N drags a box along a horizontal floor through a distance of 19.1 m. Q How much work does the pull do on the box? Ans: i got the answer as W = 158 J But i have problem with the second question?

  4. Physics

    A box is sliding up an incline that makes an angle of 15.0 degrees with respect to the horizontal. The coefficient of kinetic friction between the box and the surface of the incline is 0.180. The initial speed of the box and the

  1. Physics

    You want to use a rope to pull a 12-kg box of books up a plane inclined 30∘ above the horizontal. The coefficient of kinetic friction is 0.29. The rope pulls parallel to the incline. What force do you need to exert on the rope

  2. Physics

    A student decides to move a box of books into her dormitory room by pulling on a rope attached to the box. She pulls with a force of 130 N at an angle of 30.0° above the horizontal. The box has a mass of 24.0 kg, and the

  3. physics multiple choice

    A person pushes horizontally with constant force P on a 230 N box resting on a frictionless horizontal floor. Which of the following statements about this box is correct? A.The box will accelerate no matter how small P is. B. The

  4. physics

    A 20.0 kg box slides down a 12.0 m long incline at an angle of 3.0 degrees with the horizontal. A force of 50.0 N is applied to the box to try to pull it up the incline. The applied force makes an angle of 0.00 degrees to the

You can view more similar questions or ask a new question.