Online moment of force simulations will allow you to study how moments act on objects in different situations and how equilibrium can be achieved with different combinations of force and distance.
The moment of force, also known as moment or torque, is a physical quantity that describes the tendency of a force to cause a rotation around a specific point or axis. It is produced by the application of a force at a given distance from the point of rotation.
The moment of force is calculated by multiplying the magnitude of the force by the perpendicular distance from the point of rotation to the line of action of the force. Mathematically, it is expressed as:
Moment = force × distance × sin(θ).
Where:
Force is the magnitude of the applied force.
Distance is the perpendicular distance from the point of rotation to the line of action of the force.
θ is the angle between the direction of the force and the line joining the point of rotation to the point of application of the force.
The moment of force is measured in a unit called newton-meter (Nm) in the International System (SI).
The moment of force can be positive or negative, depending on the direction of rotation it induces. If the moment is positive, it indicates a clockwise rotation, while if it is negative, it indicates a counterclockwise rotation.
The moment of force is fundamental in the study of statics and dynamics of objects in equilibrium or in motion. In statics, the moment of force is used to analyze the equilibrium of an object, where the sum of the moments of all the forces must be equal to zero so that there is no tendency to rotate. In dynamics, the moment of force is related to the angular acceleration and rotational inertia of an object.
The moment of force has numerous practical applications in fields such as engineering, mechanics, architecture and physics, where they are used for the design of structures, the determination of the stability of objects and the analysis of rotational motions.
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In this simulation, the moment required to rotate the door is fixed. Observe how the force to be applied varies when moving the handlebar or changing the angle of application of the force. How to minimize the force required?
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Tension and position
Change the position of the mass and observe how the tension forces on the two ropes change. In which position do the tensions equalize?
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File
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A lever is a tool that allows us to transmit force using a bar and a fulcrum. See what force is required to balance the mass depending on the distance to the fulcrum.
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