1.A regulation basketball has a 8.7 cm diameter and may be approximated as a thi

Question

1.A regulation basketball has a 8.7 cm diameter and may be approximated as a thin spherical shell. How long will it take a basketball starting from rest to roll without slipping 1.1 m down an incline that makes an angle of 78.0 degrees with the horizontal? The acceleration of gravity is 9.81 m/s^2 .Answer in units of s

2.
Consider a thin 28 m rod pivoted at one end. A uniform density spherical object
(whose mass is 6 kg and radius is 7.6 m) is attached to the free end of the rod and the
moment of inertia of the rod about an end
is Irod =1/3mL^2 and the moment of inertia of the sphere about its center of mass is
Isphere =2/5mr^2.What is the angular acceleration of the rod immediately after it is released from its initial position of 50 degrees from the vertical? The
acceleration of gravity g = 9.8 m/s^2.
Answer in units of rad/s^2

Explanation / Answer

a

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