Monday
April 21, 2014

Homework Help: Physics

Posted by Alphonse on Wednesday, November 14, 2012 at 9:37pm.

A uniform 2.20 kg sign of height 0.600 m hangs freely from a frictionless pivot. (Its extension into the page is irrelevant: treat it as a thin uniform rod of ‘length’ 0.600 m, pivoted about one end.) You throw a point-like 0.248 kg snowball at the sign. It strikes and sticks to the center of the sign at 14.5 m/s and the system rotates about the pivot. (Note: Isystem,f = Isnow + Irod.)

a) Use angular momentum conservation to determine the angular speed of the system immediately after the rotational collision in rad/s. (Note: The collision is completely inelastic. Mechanical energy is not conserved during the collision.)

b) Use energy conservation to subsequently determine the change in vertical position (in centimetres) of the system's center of mass from the initial state to the final state (when the system is at rest momentarily).

Answer this Question

First Name:
School Subject:
Answer:

Related Questions

Physics 101 - A uniform sign is supported at P as shown in the figure. If the ...
Physics - A uniform rectangular sign of width 47.6 cm, height 25.0 cm, and ...
Physics - A uniform rectangular sign of width 47.6 cm, height 25.0 cm, and ...
Physics - A uniform rectangular sign of width 47.6 cm, height 25.0 cm, and ...
algebra - A shopkeeper is making a triangular sign for his store front, but he ...
physics 111 - A ball of mass 0.120 kg is dropped from rest from a height of 1.25...
pre-algebra - Use an inequality to solve the problem. A shopkeeper is making a ...
Physics - A 20 kg sign is pulled by a horizontal force such that the single rope...
physics 121 hanging sign - A sign has a mass of 1050 kg, a height h = 1 m, and a...
Physical science - If you do 600 Joules of work hoisting a 20 Kg bale of hay, to...

Search
Members