give two examples where force is applied but no work is done?
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The Brainliest Answer! If a person is pushing a wall so in that case he is applying force but the wall is not moving. if work is done then there must be some displacement but in the case mentioned above the wall is not moving hence no work is done.
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Answer: Positive work: when force and displacement are in the same direction, the work performed on an object is said to be positive work. ... Zero work: When force and displacement are perpendicular to each other, or when force or displacement is zero.
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Work is the product of a component of a force on an object times the displacement of the object while the force is being exerted in the direction of displacement. Work is a scalar. ... Work can increase or decrease energy. In most classical scenarios, work will change either the kinetic or potential energy.
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The work you do on a machine is called the work input. The force you apply to the machine to do the work is the input force. The work done by the machine on another object is called the work output. The force the machine applies to do this work is the output force.
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There are a variety of contact forces. A very common one is friction. ... Gravity is a good example of a field force, because it works whether or not an object is touching something or touching nothing at all. Two other forces of this type are electrical force and magnetic force.
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In physics, the term "work" has a specific meaning. Work, in physics, occurs when a force acts on an object to move it some distance from the start point (also called displacement). Work is calculated as the force times the distance.
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When Work is Done against frictional forces, energy is transferred, incresing the temperature of the moving object and the contact surface. When a force is used to move an object, energy is transferred (because the object has moved) and we say that Work is Done.
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Work can be either positive or negative: if the force has a component in the same direction as the displacement of the object, the force is doing positive work. If the force has a component in the direction opposite to the displacement, the force does negative work.
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The work done by a conservative force does not depend on the path taken while the done by a nonconservative force is path-dependent. Examples of conservative forces include the electric force, the elastic force, and the gravitational force.
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Work is done on an object when a force is applied to an object through a distance. One joule of work is done on an object when a force of one newton is applied over a distance of one meter.
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The effort force is the force applied to a machine. Work input is the work done on a machine. The work input of a machine is equal to the effort force times the distance over which the effort force is exerted.
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['Applied Force.', 'Gravitational Force.', 'Normal Force.', 'Frictional Force.', 'Air Resistance Force.', 'Tension Force.', 'Spring Force.']
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Tension and Energy Tension is a non-conservative force, and therefore has no associated potential energy. When tension is internal, however, it is a non-dissipative force, performing zero net work on the chosen system.
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Force is defined as the rate of change of momentum (momentum is mass multiplied by velocity) with respect to time. Work is the product of displacement and the component of force in the direction of displacement. If work is done, then the kinetic energy of an object changes.
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1 Answer. Work is done only when a certain force is applied on a object and the object moves a certain distance on the direction of the applied force. hence work done is zero when the direction is perpendicular.
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Explanation: If an object is moving with a constant velocity, then by definition it has zero acceleration. So there is no net force acting on the object. The total work done on the object is thus 0 (that's not to say that there isn't work done by individual forces on the object, but the sum is 0 ).
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According to newton's first law of motion, the acceleration of the body could be zero if there is no force acting on it. Acceleration in an object could be zero even when several forces acting on it. This happens when all the forces cancel out each other i.e the net force acting on the object is zero.