Author Question: A mass of 2.0 kg hangs from a spring with a force constant of 50 N/m. An oscillating force F = (4.8 ... (Read 80 times)

Ebrown · **on:** Jul 29, 2018

A mass of 2.0 kg hangs from a spring with a force constant of 50 N/m. An oscillating force F = (4.8 N) cos(3.0 rad/s)t is applied to the mass. What is the amplitude of the resulting oscillations? Neglect damping.

A)

0.15 m

B)

0.30 m

C)

1.6 m

D)

2.4 m

E)

0.80 m

Question 2

In an isochoric process, the internal energy of a system decreases by 50 J. What is the heat exchange?

A)

zero
B)

25 J
C)

50 J
D)

-50 J
E)

none of the above