At that instant, fine the locationand velocity of the center of mass of this sys

Question

   At that instant, fine the locationand velocity of the center of mass of this system.    figure 8.15

17) A futuristic design for a car is to have a largedisk- like flywheel within the car storing kinetic    energy. The flywheel has mass 370kg with a radius of 0.50 m and can rotate up to 520 rev/s.    Assuming all of this stored kineticenergy could be transferred to the linear velocity of the 2800kg    car, find the maximum attainablespeed of the car.
18) In Figure 9.6, a weightlifter's barbell consists oftwo identical small but dense spherical weights    each of mass 50 kg. The weights areconnected by a 0.96 m steel rod with of 25 kg.    Find the moment of inertia of thebarbell through the axis at the center, assuming the twoweights    are small enough to be treated aspoint masses.
19) 20) Watt and Horse power relationship ?

Explanation / Answer

choose 2.00 kg ball as the origin, xc = (3.00*5.00 + 4.00*12.00)/(2.00 + 3.00 + 4.00) =7.00 m center of mass of the system is at 7.00 m right of 2.00 kgball. It is the Cramster's policy that one question in one post. Pleaseask them individually.

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