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When a force is exerted on an object work is done only if the objec?
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When is work not done on an object?
Work = Force x Distance. so no work is done if there is no force exerted, or if the object does not move.
When a force is exerted on an object work is done only if the object?
Only if the object moves
What must be true when work is done?
an object moves in the same direction as a force exerted on it
If a force of 100 newtons was exerted on an object and no work was done the object must have?
The object must be stationary. Work done happens when the object is moving in the direction of the force- if it is staying still, there is no work done!
If a force of 90 Newtons was exerted on an object and no work was done would the object gain momentum?
it would remain motionless.
When is work not done on an object?
Work = Force x Distance. so no work is done if there is no force exerted, or if the object does not move.
When a force is exerted on an object work is done only if the object?
Only if the object moves
What must be true when work is done?
an object moves in the same direction as a force exerted on it
If a force of 100 newtons was exerted on an object and no work was done the object must have?
The object must be stationary. Work done happens when the object is moving in the direction of the force- if it is staying still, there is no work done!
If a force of 90 Newtons was exerted on an object and no work was done would the object gain momentum?
it would remain motionless.
What is the definition of work'?
Is done when a force exerted on an object causes that object to move some distance; equals to force times distance; measured in joules (j)
In the force has a component in the opposite direction from the motion the work done is negative?
No the work done is still positive, the force exerted and the work done to exert that force is still the same. Its just that the other object is exerting more of a force on the object doing the work.
What instrument measures how much work is being done to move an object?
A spring scale and a meter stick. Spring scale may be used to find force exerted. Meter stick finds distance through which force was exerted.
How can an object be put into motion naturally?
An object needs to have some sort of force exerted on it to be put into motion. There are no "unnatural" forces, therefore any object put into motion will have been done so "naturally."
Is work done every time forces are exerted on an object?
No. Only when there is also movement. The basic formula for work is: work = force x distance If a certain force is applied along a certain distance, then work is done.
What conditions must be met for work to be done?
1. A force is needed 2. The point of application of the force is to be displaced. 3. If the displacement is in the direction of the force then work is said to be done by the force and if the direction of displacement is opposite to the force then work is done against the force.
How much work is done when a force is applied to an object that does not move?
Work=Force x displacement. If an object doesn't move, it is not displaced, making d=0 which means that no work is done
