(II) A 0.735-kg block oscillates on the end of a spring whose spring constant is k = 41.0 N/m . The mass moves in a fluid which offers a resistive force F = ― bv, where b = 0.662 N • s/m .
(a) What is the period of the motion?
A mass swinging at the end of a pendulum has a speed of 1.32m/s at the bottom of its swing. At the top of its swing, it makes a 9° with the vertical. What is the length of the pendulum?
6.83 m
7.22 m
1.77 m
5.18 m