1) A 1.500 m long uniform beam of mass 30.00 kg is supported by a wire as shown

Question

1) A 1.500 m long uniform beam of mass 30.00 kg is supported by a wire as shown in the figure. The beam makes an angle of 10.00 degrees with the horizontal and the wire makes and angle of 30.00 degrees with the beam. A 50.00 kg mass, m, is attached to the end of the beam. What are the vertical and horizontal components of the force of the wall on the beam at the hinge?
A) H = 1,458 N, V = 454.0 N
B) H = 1,300 N, V = 403.4 N
C) H = 1,179 N, V = 354.9 N
D) H = 979 N, V = 324.5 N
E) H = 750 N, V = 297.3 N

2) A torque of 2.00 N·m is applied to a 10.0 kg object to give it an angular acceleration. If the angular acceleration is 1.75 rad/s2, then the moment of inertia is
A) 1.95 kg m2.
B) 1.05 kg m2.
C) 1.14 kg m2.
D) 1.20 kg m2.
E) 1.35 kg m2.

Explanation / Answer

2) =I

I =/ =2/1.75 =1.14kgm^2.

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