Grabación

The torque is the tendency of a force to cause rotation in a body. The greater the distance from the axis of rotation, the greater the effect. Mathematically, the torque is a vector whose magnitude corresponds to the product of the magnitude of the force and the perpendicular distance from the line of action of the body. The D stands for the distance between the point of application of the force and the pivot. The F stands for the force applied measured in the SI system of Newtons. The A stands for the angle that the vectors form. The T corresponds to the torque measured in N by M. The condition of rotational equilibrium. The first law of Newton states that for an object to be in equilibrium, the net external force must be zero. As the force is a vector, each component of the net force must be zero. This is a necessary condition for an object to be in equilibrium, known as translational equilibrium. However, the point of application of the forces is also important. For the object not to rotate, there is a second condition of equilibrium that must be met for the object not to rotate. The condition of rotational equilibrium states that if a body is in rotational equilibrium, the net torque acting on the environment around any axis must be zero. This condition guarantees that the regular acceleration around any axis is zero. If the object is not initially in rotation, it will not start to rotate. The two conditions above are the only requirements for an object to be completely in equilibrium. The center of mass is the point of an object that acts as if all the mass of the body were applied to it. If the object is too large, such as a planet, the acceleration of gravity of its points is not the same and the center of gravity is not in the same point as the center of mass. However, when an object is relatively small or the acceleration of gravity is uniform, it can be accepted that the weight acts on the center of gravity of the same. Therefore, the difference between the position between both centers is not considered. The type of equilibrium. A body is in stable equilibrium and when it is displaced, the body returns to its equilibrium position due to the gravitational force. This occurs when the center of gravity is under a pivot point, for example. The unstable equilibrium is produced when the center of gravity is above a pivot point.