A steady horizontal force F if magnitude 21N is apllied at the axle of a solid disk. the disk has mass 2.0kg and diameter of 0.10m. What is the linear speed of the center of the disk after it has moved 12m?

  1. 👍
  2. 👎
  3. 👁
  1. Nick S. ? i got 15.87 m/s.... apparently the right answer is 9 m/s tho .
    i assumed there's no torque.
    v^2 = 2 ax. a = F / m.

    1. 👍
    2. 👎
  2. B.K is an

    1. 👍
    2. 👎
  3. dont make of mrs keller shez da coolest, im tellin on u neil foglio and nick sun

    1. 👍
    2. 👎
  4. I wanted to use torque = torque

    F*d = I*a

    I= 1/2m*r^2
    where a = v^2/r

    F*d = (1/2 *m*r^2)(v^2/r)

    still didn't get the answer its supposed to be B. 13 m/s

    1. 👍
    2. 👎

Respond to this Question

First Name

Your Response

Similar Questions

  1. precalculus

    Two forces act on an object. The first force has a magnitude of 360 newtons and acts at an angle of 30° as measured from the horizontal. The second force has a magnitude of 240 newtons and acts at an angle of 135° as measured

  2. Physics

    A horizontal force, F1 = 85 N, and a force, F2 = 18.4 N acting at an angle of θ to the horizontal, are applied to a block of mass m = 2.1 kg. The coefficient of kinetic friction between the block and the surface is μk = 0.2. The

  3. physics

    Sophia exerts a steady 40-N horizontal force on a 8-kg box resting on a lab bench. The box slides against a horizontal friction force of 24 N. Show that the box accelerates at 2 m/s2.

  4. Physics - I just need help with c

    I just need some clarification on part (c). Here's the whole problem for context: A uniform solid cylinder of mass 10 kg can rotate about a frictionless axle through its center O, as shown in the cross-sectional view in the

  1. Physics

    A force F 1 of magnitude 5.90 units acts on an object at the origin in a direction θ = 28.0° above the positive x-axis. (See the figure below.) A second force F 2 of magnitude 5.00 units acts on the object in the direction of

  2. Physics

    a 2.5kg block initially at rest on horizontal surface. A horizontal force F of magnitude 6N and a vertical force P are the applied to the block. The coefficients of friction for the block and surface are Ms=0.4 and

  3. AP Physics

    A husband and wife take turns pulling their child in a wagon along a horizontal sidewalk. Each exerts a constant force and pulls the wagon through the same displacement. They do the same amount of work, but the husband's pulling

  4. physics

    A 3.90 kg block located on a horizontal frictionless floor is pulled by a cord that exerts a force F=14.1N at an angle theta=32.5degrees above the horizontal, as shown. a.) What is the magnitude of the acceleration of the block

  1. Physics

    A racquet ball with mass m = 0.238 kg is moving toward the wall at v = 12.5 m/s and at an angle of θ = 31° with respect to the horizontal. The ball makes a perfectly elastic collision with the solid, frictionless wall and

  2. physics

    A flywheel with an axle 1.0cm in diameter is mounted in frictionless bearings and set in motion by applying a steady tension of 2N to a thin thread wound tightly round the axle. The moment of inertia of the system about its axis

  3. physics

    In the figure below, a constant horizontal force Fapp of magnitude 18 N is applied to a wheel of mass 12 kg and radius 0.50 m. The wheel rolls smoothly on the horizontal surface, and the acceleration of its center of mass has

  4. Physics

    A uniform solid cylinder of mass 10 kg can rotate about a frictionless axle through its center. A rope wrapped around the outer radius R1 = 1.0 m exerts a force of magnitude F1 = 5.0 N to the right. A second rope wrapped around

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