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 threelegged stool (see the figure). Find the moment of inertia of the stool with respect to an axis that is perpendicular to the plane of the disk at its center. (Hint: When considering the moment of inertia of each rod, note that all of the mass of each rod is located at the same perpendicular distance from the axis.)
asked by
StressedStudent

3 m r^2 + (1/2) M r^2
where M = 1.67
and
m = .351
and
r = .144posted by Damon
Respond to this Question
Similar Questions

physica
Consider the rods plus disc system shown in the Figure. The rods are identical. They have a length L =0.50 m, and mass M = 0.250kg. The disc has a radius of R = 0.130m and mass m=0.750kg. Both rods are glued to the disk as shown 
physics
A string is wrapped around a uniform disk of mass M = 1.6 kg and radius R = 0.10 m. (Recall that the moment of inertia of a uniform disk is (1/2)MR2.) Attached to the disk are four lowmass rods of radius b = 0.17 m, each with a 
physics
A solid cylindrical disk has a radius of 0.16 m. It is mounted to an axle that is perpendicular to the circular end of the disk at its center. When a 50 N force is applied tangentially to the disk, perpendicular to the radius, the 
Physics
A solid cylindrical disk has a radius of 0.18 m. It is mounted to an axle that is perpendicular to the circular end of the disk at its center. When a 40N force is applied tangentially to the disk, perpendicular to the radius, the 
physics
A solid cylindrical disk has a radius of 0.17 m. It is mounted to an axle that is perpendicular to the circular end of the disk at its center. When a 35N force is applied tangentially to the disk, perpendicular to the radius, the 
Physics
A thin insulating thread of length L is attached to a point on the perimeter of a thin disk. Disk is has radius R< L and is charged with a uniform surface density, σ>0. At the end of the thread there is a small ball 
Physics
A circular disk of mass 0.3 kg and radius 40 cm, initially not rotating, slips down a thin spindle onto a turntable (disk) of mass 1.7 kg and the same radius, rotating freely at 3.1 rad/s. a) Find the new angular velocity of the 
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 40.0kg person, 
Physics
A circular disk of mass 0.4 kg and radius 36 cm, initially not rotating, slips down a thin spindle onto a turntable (disk) of mass 1.7 kg and the same radius, rotating freely at 3.4 a) Find the new angular velocity of the 
physics
A circular disk of mass 0.2kg and radius 33cm, initially not rotating, slips down a thin spindle onto a turntable (disk) of mass 1.7kg and the same radius, rotating freely at 4.4rad/s. a) Find the new angular velocity of the