frictional force; friction
Physics term for the force resisting relative motion between surfaces in contact.
Frictional force impedes the motion of an object.
この実験では摩擦力の大きさを測定する。
In this experiment, we measure the magnitude of the frictional force.
Compound of 摩擦 (まさつ, 'friction') and 力 (りょく, 'force').