A fulcrum is a pivot point or support on which a lever rests and can rotate. In other words, it is the point around which a lever turns or balances.
The force on a fulcrum refers to the amount of force or weight being applied to the fulcrum by an object or objects on either side of it. This force is typically measured in units of newtons (N) or pounds (lbs).
The force on a fulcrum can be calculated using the formula F1 x D1 = F2 x D2, where F1 and F2 are the forces acting on each side of the fulcrum and D1 and D2 are the distances from the fulcrum to the points where the forces are applied.
The weight of an object is directly related to the force on a fulcrum. This means that the heavier an object is, the greater the force it exerts on the fulcrum. Similarly, the closer an object is to the fulcrum, the less force it exerts on the fulcrum.
The weight and position of objects have a direct impact on the force on a fulcrum. Objects that are heavier or closer to the fulcrum will exert more force on the fulcrum, while objects that are lighter or further from the fulcrum will exert less force. In order to balance a lever, the weight and position of objects on either side of the fulcrum must be carefully considered.