Abstract: A weight load generating apparatus for variably outputting a weight load exerted on a load. A load is connected to, for example, an electromagnetic clutch which is driven by a drive source such as a motor to develop a weight load on the load. A physical quantity detector, for example, a torque sensor is connected to the load, and outputs a torque signal indicative of a torque exerted on the load and an angle signal indicative of an angle through which the load is displaced. A signal producing circuit produces a weight signal, a resiliency signal, a viscosity signal, and an inertia signal on the basis of the torque signal and angle signal. A driver circuit controls the magnetic clutch in accordance with the signals produced by the signal producing circuit.