Which of the following is a common method of vibration isolation?

Using rubber mounts is a well-established method of vibration isolation because rubber has the unique property of being both elastic and damping. This means it can absorb and dissipate vibrational energy, effectively reducing the transmission of vibrations from one structure to another. Rubber mounts can compress and deform under load, which helps to isolate machinery or equipment from the vibrations that might be caused by their operation, thereby protecting sensitive components and reducing noise levels.

In contrast, methods like using metal brackets, rigid supports, or solid connections typically do not provide vibration isolation. Metal brackets and rigid supports can transmit vibrations rather than absorbing them, leading to higher levels of vibration to be passed along to connected structures. Solid connections, similarly, create a continuous pathway for vibrations, which defeats the purpose of isolation. Thus, rubber mounts stand out as the effective solution for controlling and mitigating the effects of vibration.