Complex sentence: Mathematically, torque is defined as the cross product of the lever-arm distance vector and the force vector, which tends to produce rotation speaking, torque is a measure of the turning force on an object such as a bolt or a flywheel.
Split into simpler sentences: Mathematically, torque is defined as the cross product of the lever-arm distance vector and the force vector, which tends to produce rotation. Loosely speaking, torque is a measure of the turning force on an object such as a bolt or a flywheel.