SO whenever I drive around, over lines, potholes, speedbumps, or any un-even surfaces , my rear right shock makes a horrible cluttering / clunking noise. The sorta noise you hear when your car is very loaded up with pasengers / weight.
copper is a good conductor thats why they use it for those kinds of things
a penny is made out of copper as well for and example/ HERE in U. S.
could be two different things depending on rear wheel drive or front wheel drive or based on which suspension system you have. Generally a clunk sound is the shock bottoming out which means it needs replacing as you do these is pairs when changing suspension components, in other words both rear shocks would need replacing. If its a newer model car with coil over struts, which are basically the same as a shock, the sound is a little bit different and may even be louder, but any mechanic will be able to check for broken casings or missing rubbers and will quote you a price for replacing the bad parts. You can test this yourself by pushing hard on the trunk lid or bumper and watching how many bounces the car has ( should only be 2 ) if it bounces more than that or rattles/clunck sounds then you need to replace your rear suspension.
This is most often because your shock absorber is bottoming out. In an empty (or mostly empty) vehicle, this is an indication that it needs to be replaced. A shock absorber is a piston with a mix of a gas and a fluid within it. Fluid doesn't compress, but gas does. As your wheel goes up (or down), the gas is compressed (or expands). The further it gets compressed, the harder it is to keep compressing. This essentially has the effect of a very large spring that has some give to it before it really starts pushing. The -actual- large spring attached to the wheel is there to account for the range that the shock absorber is (or might be near) ineffective. Short and simple though, you should get it replaced if you have the time and money; you should also get the rear left shock replaced too, as working on/replacing/fixing one side of your car's wheels can lead to problems with steering and braking and general handling of the vehicle. The auto shop may tell you the same thing.
