Sunday

December 21, 2014

December 21, 2014

Posted by **Molly** on Sunday, November 21, 2010 at 6:30pm.

- college physics -
**Damon**, Sunday, November 21, 2010 at 7:17pmF = -k y = -3 y

when y = -.2, F = .6 N up

w = sqrt (k/m) = 1.73 radians/s

y = A sin w t

v = w A cos w t

a = -w^2 A sin w t = -w^2 y

at time t

v = w A cos w t = 1

y = A sin w t = -.2

a = F/m = .6/m = .6

so

1.73 A cos wt = 1

A cos wt = .577

and

A sin wt = -.2

A sin wt/A cos wt = -.2/.577 = - .346

tan w t = -.346

w t = -19.1 degrees = -.333 radians

sin wt = -.327

A = -.2/-.327 = .611

check

.611 cos -19.1 = .577 right

v = .577 (w) = .577*1.73 = .998 right

**Answer this Question**

**Related Questions**

Physics - A mass of 1 kg is hanging from a spring with a spring constant of 4 N/...

Physics - The length of a spring increases by 7.2 cm from its relaxed length ...

Physics please HELP - An insulating sphere of mass m and positive charge q is ...

physics - Janet wants to find the spring constant of a given spring, so she ...

Physics Important please - An insulating sphere of mass m and positive charge q ...

physics - A light spring with a spring constant of 15.2 N/m rests vertically on ...

Physics Urgent please help - Consider an ideal spring that has an unstretched ...

PHYSICS - a 0.1 kg mass is suspended at rest from a spring near the Earth's ...

physics - a 0.1 kg mass is suspended at rest from a spring near the Earth's ...

physics - If a 0.1 kg mass is suspended at rest from a spring near the Earth's ...