When two forces act in the same direction, one needs to add these two forces. The overall force is the net force acting on the object.
Continue ReadingBy definition, a force is a push or pull exerted on an object. The Newton is the unit of measurement one uses to denote the strength of a force. Likewise, a vector can represent a force. A vector is a line with an arrow, where the length of the arrow denotes the force amount, and the arrow point represents the direction.
Depending on the amounts and directions of forces exerted on an object, one can either add or subtract these forces. If two forces are in the same direction, then one adds them to find the net force, which is the vector sum of these forces. However, when two forces act in opposite direction, one has to subtract the lesser force from the larger one to find the resulting force. The resultant is the direction of the larger of these two forces.
When two forces are opposite and equal in amount, the net force is zero. These two opposite forces are called balanced forces because they do not cause a change in the object’s motion. If two forces acting on an object are different in amounts, then they are unbalanced forces and will affect the object’s motion.
Learn more about PhysicsNon-contact forces arise from long-range interactions, such as gravity and electromagnetism. Weight is an example of non-contact force, as objects are attracted to massive bodies without touching them.
Full Answer >A net force is the remaining force that produces any acceleration of an object when all opposing forces have been canceled out. Opposing forces decrease the effect of acceleration, lowering the net force of acceleration acting on an object.
Full Answer >The equation for net external force is the sum of all the external forces applied to the object. For example, a compilation of common external forces is friction force, normal force, air resistance, tension and applied force. Because these are vectors, adding them together produces the correct total external force.
Full Answer >The forces associated with a press, or interference, fit are determined using equations and pre-established values. These equations assume that the shaft is treated as a cylinder with a uniform external pressure, and the hub is treated as a hollow cylinder with uniform internal pressure.
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