What is expression for the initial moment of inertia

Assignment Help Physics
Reference no: EM13556109

A beam is rotating about its center (like a big fan blade). It has a mass M and a length L. You and a friend are trying to make a daring escape and you each fall at the same time and grab hold of one end of the beam.

a) what is expression for the initial moment of inertia of the system before you and your friend fall onto the fan?

b) what is expression for the final moment of inertia of the system ( now that you and your friend are on it)?

c)The beam has a mass of 45kg, a length of 10m, an angular velocity of 10 rotations per second, and you and your friend have the same mass; what is the angular velocity with you and your friend on the beam (you don't have to change to radians for this problem keep it in rotations/sec).

Reference no: EM13556109

Questions Cloud

How much would net income before taxes in 2012 be different : depreciation method had on net income for 2012 compared to the straight-line method. By how much would net income before taxes in 2012 be different if the straight-line method had been used for the entire time?
Explain what is the freezing/boiling point of nacl : What is the Freezing/Boiling point of 21.5g of NaCl in 139ml of water. Assume the vant hoff factor is 1.8.
Double- declining balance method : How much lower would the total amount of accumulated depreciation under the straight-line method be than the total amount of accumulated deprecation under the double- declining balance method
Evaluate the mole fraction of chloroform in the solution : A 6280 g solution of chloroform and (CH3)2CO contains 1.22 kg of CHCl3. Calculate the mole fraction of chloroform in the solution.
What is expression for the initial moment of inertia : A beam is rotating about its center (like a big fan blade). It has a mass M and a length L. what is expression for the initial moment of inertia of the system before you and your friend fall onto the fan
Determine electric potential energy of this group : Four identical charges (+2.5μC each) are brought from infinity and fixed to a straight line.  The charges are located 0.40 m apart.  Determine the electric potential energy of this group.
Evaluate what was the angular acceleration of the flywheel : In 2009, Formula 1 race cars were allowed to use a regenerative braking system that allowed them to store energy from braking and reuse it. What was the angular acceleration of the flywheel
Define what is the molarity of acetic acid : A solution of vinegar is 4.78% by mass acetic acid in water. Assuming the density of vinegar is 1.00 g/ml, what is the molarity of acetic acid
What is the viscosity of this blood : Blood from an animal is placed in a bottle 2.0m above a 3.5cm long needle, of inside diameter 0.40mm , What is the viscosity of this blood

Reviews

Write a Review

Physics Questions & Answers

  Find the magnitude of the current is flowing through wire

A 3m long wire of mass 200g is suspended in a magnetic field of 0.3 T, find the magnitude of the current is flowing through the wire

  Find what will be the position of the boat

A boat can travel 2.20 m/s in still water. What will be the position of the boat, relative to its point of origin, after 3.00 s

  What is her new rotational velocity

A student sitting on a frictionless rotating stool has rotational inertia 0.90kg?m2 about a vertical axis through her center of mass when her arms are tight to her chest. Ignoring her arm mass, what's her new rotational velocity

  What is the period of the violin string oscillation

The D string of a violin is a little too tightly stretched. Seven beats per second are heard when the string is sounded together with a tuning fork that is oscillating accurately at 293.66 Hz

  Estimate the objectives resolving power if used in air

A 0.85-cm-diameter microscope objective has a focal length of 2.2 mm. It is used in visible light with a wavelength of 538 nm. What is the objective's resolving power if used in air

  What is the emf induced across the ends of the bar

A metal bar f length L = 1.8 m slides along two horizontal metal rails, what is the emf induced across the ends of the bar

  What is the books speed as it slides away

A student places her 350 g physics book on a frictionless table. She pushes the book against a spring, compressing the spring by 4.0 cm, What is the book's speed as it slides away

  Calculate classical radius r0

The electron's brother is the neutrino which has no mass and no charge, Given that the electron's mass in energy units is 0.511 MeV, calculate its classical radius r0.

  At what rate does the box accelerate down the slope

A 6.0 kg box slides down an inclined plane that makes an angle of 39° with the horizontal. at what rate does the box accelerate down the slope

  Find the angle at which it emerges

A uniform field E = -170000 j N/C exists between two plates of length L = 3 cm. Find the angle at which it emerges

  What force is applied to the lid

A 22.5 cm screwdriver is used to pry open a can of paint. If the axis of rotation is 2.29 cm from the end of the screwdriver blade and a force of 79 N is exerted at the end of the screwdriver’s handle, what force is applied to the lid? Answer in unit..

  How to use 1.33 for the index of refraction of water

A plate of glass with parallel faces having a refractive index of 1.57 is resting on the surface of water in tank. A ray of light coming from above in air makes an angle of incidence 34.5 degrees with normal to the top surface of the glass.

Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd