Gear ratios can be used to increase ________.

Gear ratios are a fundamental concept in manual transmissions that allow for varying the relationship between the engine speed and the wheel speed. When gear ratios increase, they effectively multiply the engine's torque output. This is particularly useful for scenarios where additional power is needed, such as during acceleration or when climbing a hill, as it enables the vehicle to overcome resistance more easily.

Higher gear ratios translate to higher torque delivered to the wheels, thus enhancing the vehicle's ability to perform work. Conversely, if the gear ratio is decreased (using a lower gear), the engine speed is increased, allowing for higher speeds at the wheels but reducing torque. Understanding how gear ratios manipulate torque is essential for effectively using a manual transmission to optimize the performance of a vehicle.