Ask questions and get helpful responses.
Ask a New Question
  1. Questions

Physics

A flat uniform circular disk (radius = 2.10 m, mass = 1.00 102 kg) is initially stationary. The disk is free to rotate in the horizontal plane about a frictionless axis perpendicular to the center of the disk. A 40.0-kg person, standing 1.00 m from the axis, begins to run on the disk in a circular path and has a tangential speed of 2.60 m/s relative to the ground.

  1. 👍
  2. 👎
  3. 👁
  4. ℹ️
  5. 🚩
Kevin

  1. To find Tangential spped , first you do ...
    mvr=1/2MR^2w
    and you're solving for w
    so basically w=(2mvr)/MR^2
    where m= to the mass of the disk(2.10)
    r= radius of disk(102)
    M=mass of person(40)
    R=radius of the person(1.00)
    v=tangential speed(2.60)

    2(2.6)(1)(40)/(102)(2.10)=w
    good luck!

    1. 👍
    2. 👎
    3. ℹ️
    4. 🚩
    Simba

  2. This is awful dogshit. Never submit another answer or I will have you banned.

    1. 👍
    2. 👎
    3. ℹ️
    4. 🚩
    John Weller

Respond to this Question

First Name

Your Response

Similar Questions

  1. physics

    a uniform disk of mass 3kg and radius 12cm rotates at 480 rev/min. find its kinetic energy (Hint : I of uniform disk =1/2MR2)

  2. physics

    A torque of 12 N ∙ m is applied to a solid, uniform disk of radius If the disk accelerates at what is the mass of the disk?

  3. physics

    A potter's wheel is rotating around a vertical axis through its center at a frequency of 1.8rev/s . The wheel can be considered a uniform disk of mass 4.7kg and diameter 0.34m . The potter then throws a 3.1kg chunk of clay,

  4. Physics

    Two shuffleboard disks of equal mass, one orange and the other yellow, are involved in a perfectly elastic glancing collision. The yellow disk is initially at rest and is struck by the orange disk moving initially to the right at

  1. Physics - Angular Speed Question

    A merry-go-round can be modeled as a disk with radius 2.5 meters and mass of 150 kg. For this problem, assume the density is uniform. It is initially rotating at 2.0 rad/sec. Two children of mass 30 kg and 40 kg hop onto the

  2. Physics

    A machine part is made from a uniform solid disk of radius R and mass M. A hole of radius R/2 is drilled into the disk, with the center of the hole at a distance R/2 from the center of the disk (the diameter of the hole spans from

  3. Physic

    A machine part is made from a uniform solid disk of radius R = 0.161 m and mass M = 7.75 kg. A hole of radius R/2 is drilled into the disk, with the center of the hole at a distance R/2 from the center of the disk (the diameter of

  4. Physics - Pendulums

    A uniform circular disk whose radius R is 32.0 cm is suspended as a physical pendulum from a point on its rim. (a) What is its period of oscillation? __ s (b) At what radial distance r < R is there a point of suspension that gives

  1. Physics

    A solid circular disk has a mass of 1.67 kg and a radius of 0.144 m. Each of three identical thin rods has a mass of 0.351 kg. The rods are attached perpendicularly to the plane of the disk at its outer edge to form a three-legged

  2. Physics

    Figure 10-42 shows a uniform disk that can rotate around its center like a merry-go-round. The disk has a radius of 2.00 cm and a mass of 20.0 grams and is initially at rest. Starting at time t = 0, two forces are to be applied

  3. Physics

    I would really appreciate the help for this assignment. A small reasoning for the answer would be very helpful. Thank you. A sphere of mass m and radius r is attached to the rim of a disk (mass M, radius R). The disk is rotating

  4. Physics

    An green hoop with mass mh = 2.4 kg and radius Rh = 0.14 m hangs from a string that goes over a blue solid disk pulley with mass md = 2.2 kg and radius Rd = 0.1 m. The other end of the string is attached to a massless axel through

Still need help? You can ask a new question.