Monday

December 22, 2014

December 22, 2014

Posted by **phys** on Tuesday, April 6, 2010 at 11:32pm.

Rigid rods of negligible mass lying along the y axis connect three particles. The system rotates about the x axis with an angular speed of 3.30 rad/s.

4kg,y=3.00m

2kg,y=-2.00m

3kg,y=-4.00m

a)Find the total rotational kinetic energy evaluated from 1/2 I omega^2

4(3^2)+2(2^2)+3(4^2)=92

.5(92)(3.3)^2

b)Find the tangential speed of each 4kg and 3kg particles

4kg: 4x3.3=13.2m/s

3kg: 3x3.3=9.9m/s

c)Find the total kinetic energy evaluated from Σ mi vi2/2

.5(4kg)(6^2)+.5(2kg)(4^2)+.5(3kg)(8^2)=184

i dont know why i got these wrong

**Answer this Question**

**Related Questions**

chemistry - can you tell me what i did wrong on this problem Rigid rods of ...

Physics - The rigid object shown in Fig. 10-63 consists of three balls and three...

Physics - The rigid object shown in Fig. 10-63 consists of three balls and three...

physics - Three particles, each of mass 3.0 kg, are fastened to each other and ...

Physics - The three 500 g masses in the daigram are connected by massless, rigid...

Physics - An object whose mass is unknown is held by two rigid rods. The whole ...

Science Maths - Sir, My question is as below:- Three particles a b & c of mass m...

Physics 203 ( College) - Four particles, one at each of the four corners of a ...

Physics - Three masses are connected by massless rigid rods. Rods AC and CB have...

Physics HELP!! - Three masses are connected by massless rigid rods. Rods AC and ...