Author Question: A horizontal, 2.00 m long, 3.00 kg uniform beam that lies along the east-west direction is acted on ... (Read 49 times)

JMatthes · **on:** Jul 29, 2018

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 Nm north
B)

zero
C)

400 Nm north
D)

800 Nm south
E)

400 Nm south

Question 2

A harmonic wave travels with a speed of 200 m/s and has a wavelength of 0.800 m. What is the frequency of the wave?

A)

25.0 Hz

B)

40.0 Hz

C)

125 Hz

D)

80.0 Hz

E)

250 Hz