Answer Happy

Three objects lie in
the x, y plane. Each rotates about
the z axis with an angular speed
of 6.25 rad/s. The mass m of each
object and its perpendicular distance r from
the z axis are as follows:
(1) m1 = 9.80 kg
and r1 = 1.20 m,
(2) m2 = 2.50 kg
and r2 = 2.40 m,
(3) m3 = 7.40 kg
and r3 = 5.60 m. Find the
tangential speed of (a) object
1, (b) object 2,
and (c) object
3. (d) Determine the total kinetic
energy of this system using the expression (e) Find
the rotational kinetic energy of the system using the
relation to
verify that the answer is the same as that
in (d).