The missing word in this sentence is "more". When the load is placed nearer the fulcrum, more force is needed (to lift the load.)
When the load is being lifted using a lever, the physical quantity that causes the motion of the load is called the "torque". A torque is a product of the force times the perpendicular distance from the fulcrum to the line along which the force is acting.
The torque of the...
The missing word in this sentence is "more". When the load is placed nearer the fulcrum, more force is needed (to lift the load.)
When the load is being lifted using a lever, the physical quantity that causes the motion of the load is called the "torque". A torque is a product of the force times the perpendicular distance from the fulcrum to the line along which the force is acting.
The torque of the force applied to the lever in order to lift the load has to at least balance the torque of the force the load exerts on the lever due to its weight. Thus, the product of the applied force and the perpendicular distance between the fulcrum and the line of the force has to at least equal the torque the load exerts on the lever. So, the greater the distance from the fulcrum to the point of the force application, the less the applied force would have to be. And vice versa, the closer the point of the force application to the fulcrum, the more force is needed.
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