 To understand this phenomena of excess or deficit collective force generation , we study a broad class of models of both cytoskeletal filaments and molecular motors.
<clarity>  To understand this phenomena of excess or deficit collective force generation , we study a broad class of models of both cytoskeletal filaments and molecular motors.
 To understand this phenomena of excess or deficit in the collective force , we study a broad class of models of both cytoskeletal filaments and molecular motors.