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66. The pulley shown in figure (10-E11) has a radius of
20 cm and moment of inertia 0-2 kg-m'. The string going
over it is attached at one end to a vertical spring of
spring constant 50 N/m fixed from below, and supports
a 1 kg mass at the other end. The system is released
from rest with the spring at its natural length. Find the
speed of the block when it has descended through 10 cm.
Take g = 10 m/s.
1kg
Figure 10-411
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