Moments of Inertia Ranking
Three pairs of balls are connected by very light rods as shown in the figure.
Rank in order, from smallest to largest, the moments of inertia I1, I2, and I3 about axes through the centers of the rods.
=I2, I1, I3
Share
About Vita
Related Posts
A 1-kg of wood is pressed against a vertical wall (µs= 0.25) by a force inclined 40º upward with respect to the vertical axis.
The coefficient of friction between the sole of a shoe and a tile span roof is 0.36.
A 60 kg package rests on the level floor of a warehouse.
A 1340 kg Triumph TR-8 traveling north at 43 km/hr crashes head-on into a 1850 kg Checker cab moving west at 87 km/hr.
A charge of -7 x 10-8 C exerts a force of 0.045 N on a charge of +6.0 x 10-7.
Comments ( 2 )
2<1<3
"if m1 and m2 are the two mass which are separated by distanceR by fixed mass less rod , are rotated on the axispassing through mid point
I = m1 ( R/2 )2 + m2 ( R/2)2
for 1 we have
I = m ( R/2 ) 2 +m ( R/2 ) 2 = 1/2 mR2
for 2 we have
I = 2m ( R/4 ) 2 + m ( R/4 ) 2 =3 /16 m R2
for 3 we have
I= m/2 ( R ) 2 + m/2 ( R) 2 = mR2
so we have the order 2<1<3"
In the response answer, for I3, is that MR(2) or MR^2