Multiple Choice
A uniform rod is 2.0 m long.It is hinged to a wall at its left end,and held in a horizontal position at its right end by a vertical very light string,as shown in the figure.What is the angular acceleration of the rod at the moment after the string is released if there is no friction in the hinge?
A) 15 rad/s2
B) 3.3 rad/s2
C) 7.4 rad/s2
D) 11 rad/s2
E) It cannot be calculated without knowing the mass of the rod.
Correct Answer:

Verified
Correct Answer:
Verified
Q57: As shown in the figure,a given force
Q58: In the figure,a uniform ladder of weight
Q59: In a laboratory experiment,a student brings up
Q60: A figure skater rotating at 5.00 rad/s
Q61: In a certain cyclotron,a proton of mass
Q63: When is the angular momentum of a
Q64: A spinning ice skater on extremely smooth
Q65: An irregularly shaped object that is 10
Q66: A light-weight potter's wheel,having a moment of
Q67: A man in a gym is holding