Find the new angular speed of the student

Assignment Help Physics

Reference no: EM13319024

A student sits on a rotating stool holding two 3.0 kg objects. When his arms are extended horizontally, the objects are .92 m from the axis of rotation and he rotates with an angular speed of 0.75 rad/s. The moment of inertia of the student plus the stool is 3.0 kg.m2 and is assumed to be constant. The student then pulls in the objects horizontally to 0.30 m from the rotation axis.

a) Find the new angular speed of the student.

b) Find the kinetic energy of the student before and after the objects are pulled in.

c) How do you account for the change in kinetic energy, if there is any?

Reference no: EM13319024

Questions Cloud

Write equilibrium equations in the x-y and z directions : The traffic light shown in Figure 3 is supported by a system of cables. Points A and B are in a vertical plane which is parallel to x-z plane. Point C is in y-z plane. The traffic light has a mass of 75 kg.

Find is the force attractive or repulsive : Two very small spheres are initially neutral and separated by a distance of 0.55 m. find Is the force attractive or repulsive

Compute the internal resistance of the battery : A battery having an emf of 9.80 V delivers 109 mA when connected to a 60.0 load. Determine the internal resistance of the battery

Compute the disclosure and elevation of a : Reciprocal leveling gives the following readings in feet from a setup near A: on A, 2.071; on B, 8.254, 8.259 and 8.257. At the setup near B: on B, 9.112; on A, 2.926, 2.930 and 2.927.

Find the new angular speed of the student : A student sits on a rotating stool holding two 3.0 kg objects. When his arms are extended horizontally, Find the new angular speed of the student

What are the benefits of proposal : How do you feel this could improve workplace outcomes? What are the benefits of this proposal and is it cost effective, realistic and practical? Why?

How to draw and label a flowchart for the system : The temperature of steam at the inlets of both turbines is 500 C, and the enthalpy of steam is 3027 kJ/kg at the exit of high pressure turbine, and 2385 kJ/kg at the exti of the low pressure turbine.

How many molecules of carbon are in it : Carbon 12 is defined such that 12g is one mole. So if a diamond is 37.5 g, how many moles of carbon are in it? How many molecules of carbon are in it

How could you support michelle to deal with any issues : How would you support Michelle to satisfactorily perform the role and how could you support Michelle to deal with any issues and concerns that she might have?

User Account

All Pages