Hwk8B

# Hwk8B - the point where x = 180 m(d the speed of the bolt...

This preview shows page 1. Sign up to view the full content.

PHYS 153 Homework 8B Problem 1 A 2 . 20 kg mass oscillates on a spring of force constant 250 . 0 N / m with a period of 0 . 615 s. (a) Is this system damped or not? How do you know? If it is damped, ﬁnd the damping constant b . (b) Is the system undamped, underdamped, critically damped, or overdamped? How do you know? Problem 2 A 0 . 0200 kg bolt moves with SHM that has an amplitude of 0 . 240 m and a period of 1 . 500 s. The displacement of the bolt is +0 . 240 m when t = 0. Compute (a) the displacement of the bolt when t = 0 . 500 s; (b) the magnitude and direction of the force acting on the bolt when t = 0 . 500 s; (c) the minimum time required for the bolt to move from its initial position to
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: the point where x =-. 180 m; (d) the speed of the bolt when x =-. 180 m. Problem 3 A sinusoidally varying driving force is applied to a damped harmonic oscillator of force constant k and mass m . If the damping constant has a value b 1 , the amplitude is A 1 when the driving angular frequency equals p k/m . In terms of A 1 , what is the amplitude for the same driving frequency and the same driving force amplitude F max , if the damping constant is (a) 3 b 1 and (b) b 1 / 2? 1 - 1...
View Full Document

{[ snackBarMessage ]}

Ask a homework question - tutors are online