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Is pushing up against a wall doing work?
Physically pushing against a wall can be considered as doing work in a physics context, as work is defined as the force applied over a distance. The force you exert on the wall does not result in any displacement of the wall, but work is still being done in the physics sense, as long as the force is being applied.
If you push for an hour against a stationary wall you do no work?
That's correct. Work is only done when a force causes an object to move in the direction of the force, so pushing against a stationary object, like a wall, does not result in any work being done.
Explain how it is possible to exert force but accomplish no work?
Work is only accomplished when a force results in the movement of an object in the direction of the force. If the force is applied but there is no displacement of the object, then no work is done. For example, pushing against a stationary wall does not result in any work being done because the wall does not move.
Any machine which moves an object produces work.?
Not necessarily. Work is defined as the product of force and distance, so even if a machine is moving an object, it may not be doing work if the force is not acting over a distance. For example, imagine a person pushing against a wall: even though they are applying a force, the wall doesn't move so no work is done.
Explain - how you can exert a large force on an object without doing any work?
You can exert a large force on an object without doing any work by pushing against an immovable wall. In this scenario, although a large force is applied, no work is done because there is no displacement of the object in the direction of the force. Work is only done when there is both a force and displacement in the same direction.
Is pushing up against a wall doing work?
Physically pushing against a wall can be considered as doing work in a physics context, as work is defined as the force applied over a distance. The force you exert on the wall does not result in any displacement of the wall, but work is still being done in the physics sense, as long as the force is being applied.
If you push for an hour against a stationary wall you do no work?
That's correct. Work is only done when a force causes an object to move in the direction of the force, so pushing against a stationary object, like a wall, does not result in any work being done.
What is he definition of work?
Work is the product of a force and the distance through which it acts in the direction of the force. In order for work to be done, the object must move in the direction of the force. If you push on a brick wall until you exhaust yourself and the wall doesn't move, you have not done any work. If you push on a box and it moves in the direction that you are pushing it, you have done work.
How much work is done by the surface molecules pushing upward on the object when it moved horizontally?
If there is no vertical motion, then no work is done by any vertical forces.
Is work done if you push a car that has run out of gas?
Yes. The work is being done by whoever is pushing rather then the engine, but work is being done. Any time a force is applied through a distance, work is being done.
Explain how it is possible to exert force but accomplish no work?
Work is only accomplished when a force results in the movement of an object in the direction of the force. If the force is applied but there is no displacement of the object, then no work is done. For example, pushing against a stationary wall does not result in any work being done because the wall does not move.
Any machine which moves an object produces work.?
Not necessarily. Work is defined as the product of force and distance, so even if a machine is moving an object, it may not be doing work if the force is not acting over a distance. For example, imagine a person pushing against a wall: even though they are applying a force, the wall doesn't move so no work is done.
Explain - how you can exert a large force on an object without doing any work?
You can exert a large force on an object without doing any work by pushing against an immovable wall. In this scenario, although a large force is applied, no work is done because there is no displacement of the object in the direction of the force. Work is only done when there is both a force and displacement in the same direction.
Why the wall does not show any effect when we push it with our hands?
No, because we are pushing the wall with less capacity of power compare to the power of wall that's why it does not show any effect.
What are the forces act on a retaining wall?
Outward Force: dirt pushing against retaining wallInward Force: atmospheric pressure, the retaining wall pushing against the dirtDownward Force: gravity, atmospheric pressure, the retaining wall pushing against the earth.Upward Force: The earth pushing against the retaining wall.
Is pushing against an immovable object is an example of work?
when force is applied and work is done In order to accomplish work on an object there must be a force exerted on the object and it must move in the direction of the force. for example if u climb a tree u are doing work and force is applied
Why is work not said to be done by a boy who is pushing a wall?
Because in the case of an applied force, work = force x distance, and in this case the distance is zero - the force is not applied over a longer distance. Any energy spent by the boy for applying the force is wasted - converted into heat. For extra credit: Unless the wall is perfectly inelastic (not much is perfect) it will move a little (a very little) so some work is done. Just so little it is hard to notice. Like when someone types their homework question into one of these question/answer sites and doesn't think about what they have been told during lesson time or what they have been asked to read. Lazy minds are just lumps of fat.
