Want this question answered?
there can be force without movement. an example of this would be when a person pushes against a wall :)
"Work" is the product of force times distance; so if you apply a force without moving, or if you have a movement without a force, then there is no work involved.
i don't believe so. Work = Force * distance so if there is no force there would be no work
All bodies with mass are attracted to the Earth by gravity, so when a body is raised you must do work to raise it. This work is equal to force x height, if force is in Newtons and height in meters, the work is in units of Joules.
force?
Negative work
there can be force without movement. an example of this would be when a person pushes against a wall :)
The idea is to multiply force times distance. This assumes that both are in the same direction, and that the force is constant. If the force is done against a gravitational field, or some other so-called "conservative force", then all the work done will be converted to potential energy. If it is done against friction, the work is basically wasted. It is converted to heat, and NOT to potential energy.
"Work" is the product of force times distance; so if you apply a force without moving, or if you have a movement without a force, then there is no work involved.
i don't believe so. Work = Force * distance so if there is no force there would be no work
All bodies with mass are attracted to the Earth by gravity, so when a body is raised you must do work to raise it. This work is equal to force x height, if force is in Newtons and height in meters, the work is in units of Joules.
In this case, you are not doing work against the force of gravity, but against the force of friction.
The displacement of the load is perpendicular to the direction of force therefore work done by the coolie against the force of gravity is zero.
Gravitational energy is a kind of potential energy - work done against a force.Gravitational energy is a kind of potential energy - work done against a force.Gravitational energy is a kind of potential energy - work done against a force.Gravitational energy is a kind of potential energy - work done against a force.
force?
Lift any object. Grav. force is acting down, you must apply an upward force to lift the object. Work is force applied through a distance, so work is done if you lift it, but not if you hold it still.
No work is done when you push against something that is too heavy to move. A force has to cause movement for work to have been done.