Question

A dumbbell has a length of 2.3 m and all of its mass can be considered...

A dumbbell has a length of 2.3 m and all of its mass can be considered to be at the ends. It has a mass of 2.1 kg at one end and 6.5 kg at the other end. It is rotating about an axis which is

perpendicular to its length at a point 1.4 m from the heavier end (6.5 kg). It is rotating in the cw direction at 3.5 rev/min at t = 0. At t = 5.3 s it is rotating at 2.3 rev/min in the counter clockwise direction. What is its moment of inertia? What is its angular acceleration? What is the torque on it? What is its angular momentum at t = 3.0 s?

Homework Answers

Know the answer?
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Not the answer you're looking for?
Ask your own homework help question
Similar Questions
A cylindrical rod of length 2.0 m, radius 0.5 m, and mass 1.5 kg has two...
A cylindrical rod of length 2.0 m, radius 0.5 m, and mass 1.5 kg has two spheres attached on its ends. The centers of the spheres are 1.0 m from the center of the rod. The mass of each sphere is 0.66 kg. The rod is capable of rotating about an axis passing through its center and perpendicular to the plane of the page, but the set up is stationary to begin with. A small mass of value 0.19 kgmoving...
A thin uniform rod has a length of 0.490 m and is rotating in a circle...
A thin uniform rod has a length of 0.490 m and is rotating in a circle on a frictionless table. The axis of rotation is perpendicular to the length of the rod at one end and is stationary. The rod has an angular velocity of 0.37 rad/s and a moment of inertia about the axis of 3.50×10−3 kg⋅m2 . A bug initially standing on the rod at the axis of rotation decides to crawl out to the other end of...
A thin uniform rod has a length of 0.430 m and is rotating in a circle...
A thin uniform rod has a length of 0.430 m and is rotating in a circle on a frictionless table. The axis of rotation is perpendicular to the length of the rod at one end and is stationary. The rod has an angular velocity of 0.32 rad/s and a moment of inertia about the axis of 3.20×10−3 kg⋅m2 . A bug initially standing on the rod at the axis of rotation decides to crawl out to the other end of...
A solid cylinder of mass 1.6 kg and radius 35 cm is rotating counterclockwise around a...
A solid cylinder of mass 1.6 kg and radius 35 cm is rotating counterclockwise around a vertical axis running through the centers of its circular faces at 560 rev/min. A second solid cylinder of the same mass and radius is rotating clockwise around the same vertical axis running through the centers of its circular faces at 850 rev/min. If the cylinders couple so that they rotate about the same vertical axis, what is the angular velocity (in rev/min) of the...
I want only final answer 8. A flywheel has a mass of 100 kg and a...
I want only final answer 8. A flywheel has a mass of 100 kg and a radius of gyration kG = 100 mm about an axis of rotation passing through its mass center. If a motor supplies a clockwise torque having a magnitude of M= 9 t Nm, where t is in seconds, determine the flywheel’s angular velocity in t = 5s. Initially the flywheel is rotating clockwise at ω1 = 4 rad/s
A uniform rod of mass 3.40×10−2 kg and length 0.410 m rotates in a horizontal plane...
A uniform rod of mass 3.40×10−2 kg and length 0.410 m rotates in a horizontal plane about a fixed axis through its center and perpendicular to the rod. Two small rings, each with mass 0.190 kg , are mounted so that they can slide along the rod. They are initially held by catches at positions a distance 5.50×10−2 m on each side from the center of the rod, and the system is rotating at an angular velocity 28.0 rev/min ....
A thin uniform rod has a length of 0.400 m and is rotating in a circle...
A thin uniform rod has a length of 0.400 m and is rotating in a circle on a frictionless table. The axis of rotation is perpendicular to the length of the rod at one end and is stationary. The rod has an angular velocity of 0.34 rad/s and a moment of inertia about the axis of 2.50×10−3 kg⋅m2 . A bug initially standing on the rod at the axis of rotation decides to crawl out to the other end of...
A grindstone of mass m = 50.0 kg is a solid disk 0.480 m in diameter....
A grindstone of mass m = 50.0 kg is a solid disk 0.480 m in diameter. You press an ax down on the rim with a normal force of F = 155 N The coefficient of kinetic friction between the blade and the stone is 0.50, and there is a constant friction torque of 6.5 Nm between the axle of the stone and its bearings. (a) While you are pressing the ax against the rim, how much force would your...
A rod of length l=1.1m and mass M= 5.5kg joins two particles with masses m1 =4.8kg...
A rod of length l=1.1m and mass M= 5.5kg joins two particles with masses m1 =4.8kg and m2 = 2.8kg, at its ends. The combination rotates in the xy-plane about a pivot through the center of the rod with the linear speed of the masses of v= 3.5 m/s. (Moment of inertia of a uniform rod rotating about its center of mass I= 1 12 M l2 ) angularmomentum a) Calculate the total moment of inertia of the system I...
A rod of length l=2.2m and mass M= 9.7kg joins two particles with masses m1 =12.9kg...
A rod of length l=2.2m and mass M= 9.7kg joins two particles with masses m1 =12.9kg and m2 = 5.0kg, at its ends. The combination rotates in the xy-plane about a pivot through the center of the rod with the linear speed of the masses of v= 12.9 m/s. (Moment of inertia of a uniform rod rotating about its center of mass I= 1 12 M l2 ) a) Calculate the total moment of inertia of the system I =...