# phys

A disk rolls down a slope. It rotational axis is its center of mass. It is rotation at a constant angular speed making 34.0 full revolutions in a time interval of 3.30 s.

1)What is the rotational inertia of the disk if its mass is 11.7 kg, and its radius is 49.6 cm?
A=1.44kmg^2

2) What is the rotational kinetic energy K of the rotating wheel?

3)What is the translational kinetic energy of the rolling disk?

4)What is the total kinetic energy of the rolling disk?

1. 👍 0
2. 👎 0
3. 👁 286

## Similar Questions

1. ### Physics

A flywheel is a solid disk that rotates about an axis that is perpendicular to the disk at its center. Rotating flywheels provide a means for storing energy in the form of rotational kinetic energy and are being considered as a

asked by StressedStudent on November 3, 2012
2. ### physics

A 10.0-kg cylinder rolls without slipping on a rough surface. At the instant its center of amss has a speed of 10m/s, determine (a) the translational kinetic of its center of mass (b) the rotational kinetic energy about its center

asked by cyndi on January 29, 2007
3. ### 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,

asked by Kevin on November 4, 2010
4. ### phys

A disk with a rotational inertia of 2.0 kg.m^2 and a radius of 0.40 m rotates on a frictionless fixed axis perpendicular to the disk faces and through its center. A force of 5.0 N is applied tangentially to the rim. The angular

asked by jay on May 1, 2014
5. ### physics (please check work)

Four identical particles, each with mass m, are arranged in the x,y plane like a cross. They are connected by light sticks to form a rigid body. If m=2.0kg and a=1.0 m the rotational inertia of this array about the y axis is:

asked by susane on December 9, 2006
1. ### physics

A curcial part of a piece of machinery starts as a flat uniform cylindrical disk of radius R0 and mass M. It then has a circular hole of radius R1 drilled into it. The hole's center is a distance h from the center of the disk.

asked by Sleepless on April 12, 2008
2. ### PHYSICS--SHM

A pendulum consists of a uniform disk with radius r = 10 cm and mass 545 g attached to a uniform rod with length L = 500 mm and mass 300 g. (figure: one end of the rod attach to a pivot and the other end attach to the center of

asked by wooh on January 27, 2007
3. ### Physics.

The figure below shows an arrangement of 15 identical disks that have been glued together in a rod-like shape of length L = 1.4500 m and (total) mass M = 135.000 g. The arrangement can rotate about a perpendicular axis through its

asked by Jake on March 4, 2010
4. ### Physics

What is the rotational inertia of a solid iron disk of mass 45 kg, with a thickness of 3.44 cm and radius of 19.0 cm, about an axis through its center and perpendicular to it?

asked by Anonymous on November 13, 2011
5. ### Physics

Two wheels have the same mass and radius of 4.0 kg and 0.35 m, respectively. One has (a) the shape of a hoop and the other (b) the shape of a solid disk. The wheels start from rest and have a constant angular acceleration with

asked by Jasmin on November 4, 2011
6. ### science

Consider a rotating platform such as you used in lab. Imagine that it is initially rotating at some angular velocity. You drop a disk, that is not rotating, onto the top of the rotating platform so that it sticks to the rotating

asked by sara on August 1, 2014