Powered hydraulic tools function by using what substance?

Powered hydraulic tools operate by utilizing fluid under pressure to generate mechanical force. This principle relies on Pascal's law, which states that when pressure is applied to a confined fluid, it is transmitted undiminished in all directions. In the context of hydraulic tools, this fluid (often oil) is pumped into a cylinder, creating pressure that moves pistons and allows the tool to perform work, such as cutting, lifting, or spreading materials.

Using fluid also provides several advantages, including the ability to maintain consistent pressure, reduce the weight of the tool compared to mechanical systems, and allow for greater force generation in a compact design. This effectiveness makes hydraulic tools essential in firefighting and rescue operations where powerful and reliable equipment is needed to operate quickly in critical situations.