Using radians for simple harmonic motion (SHM) in a simple pendulum is essential because many fundamental equations, such as v = rω and a = rα, are derived under the assumption of radians. While degrees can be used, they require additional conversion factors, making calculations more complex. Radians simplify the relationships between angular and linear quantities, leading to easier and more intuitive physics. The consensus among physicists is that radians provide a more straightforward approach to understanding motion. Therefore, employing radians is preferred for clarity and efficiency in calculations.
