A horizontal, 2.00 m long, 3.00 kg uniform beam that lies along the east-west direction is acted on by two forces. At the east end of the beam, a 200 N force pushes downward. At the west end of the beam, a 200 N force pushed upward
What is the torque about the center of mass of the beam? A)
800 N?m north
B)
zero
C)
400 N?m north
D)
800 N?m south
E)
400 N?m south
C
You might also like to view...
A 0.10 ?F capacitor is connected to a 120. volt rms 60. Hz source
(a) What is the capacitive reactance? (b) What is the rms current to the capacitor? (c) If both the capacitance and the frequency doubled, what would be the current?
Refraction causes the bottom of a swimming pool to appear
A) farther down than it actually is. B) closer to the surface than it actually is. C) neither of these
The superposition of identical waves affects
A) amplitude. B) wavelength. C) speed. D) all of the above E) none of the above
The source of electrons lighting common lamps in your classroom is
1) the power company, 2) the electrical outlet, 3) atoms in the lamp filament, 4) the wires leading to the lamp, whereas the source of energy that lights a common lamp in your home is 5) the power company. 6) the electrical outlet. 7) atoms in the bulb filament. 8) the wires leading to the lamp.