Get Associated Products By product id

$pid=5; //Note: should be Conferrable product Id


$product = Mage::getModel('catalog/product')->load($pid);
$associatedProducts=$product->getTypeInstance()->getUsedProducts();
foreach($associatedProducts as $associatedProduct){
              // print_r($associatedProduct->getData());
$cid=$associatedProduct->getEntity_id();

                }