Homework Help: physic

Posted by Chan on Wednesday, October 21, 2009 at 2:39am.

Hooke's law describes a certain light spring of unstretched length 30.0 cm. When one end is attached to the top of a door frame, and a 8.40-kg object is hung from the other end, the length of the spring is 40.00 cm.
(a) Find its spring constant.
____ kN/m

(b) The load and the spring are taken down. Two people pull in opposite directions on the ends of the spring, each with a force of 190 N. Find the length of the spring in this situation.
___ m

physic - bobpursley, Wednesday, October 21, 2009 at 9:26am
Hookes law is elongation=kx

What part of that are you having difficult with?

Answer this Question

Related Questions

PHYSICS!!! - Hooke's law describes a certain light spring of unstressed ...
physics - When a 4.48 kg mass is hung vertically on a certain light spring that ...
physics - When a 2.60-kg object is hung vertically on a certain light spring ...
physic - a force of 3.5 N is applied to a spring which obeys Hooke's law and...
Physics - When a 3.00-kg object is hung vertically on a certain light spring ...
Physics - A spring has a force constant of 478 N/m and an unstretched length of ...
Engineering - A 50 lb bar rotates clockwise 2 rad/s. The spring attached to its ...
Physic - An unstretched spring is 11.0 cm long. When you hang an 590 g weight ...
physics - A door has mass M, width W, and height H. It is attached to a door ...
Calculus - Hooke's Law , Spring Constant - Hi could someone please help me ...

For Further Reading

First Name:
School Subject:
Answer: