- #1
Sunil Simha
- 266
- 2
Homework Statement
Find the time period of the oscillations of the body whose mass is m when it is displaced slightly form equilibrium. All springs have spring constant k and the pulleys and strings are massless and frictionless.
Homework Equations
[itex]T=2∏\sqrt{\frac{m}{K}}[/itex]
where T is the time period of oscillations
m is the mass of the body, K is the effective force constant.
The Attempt at a Solution
I've tried to find the net displacement hoping that it would help.
When the body is pulled by a distance x from equilibrium, the spring 1 extends by x. Then this force due to extension on the pulley must be balanced by the tension and extension of spring 2. Since the latter two are equal, spring 2 must extend by 0.5x. Similarly, spring 3 must extend by 0.25x.
So the next displacement of the block is [itex]\frac{7x}{4}[/itex].
I don't know what to do after that to find the effective force constant on the block.