Table of Contents
When work is done on an object the object must move?
In order for work to be done, the object must move in the same direction as the force being applied to it.
What does it mean for work to be done on an object?
Work is done when a force is applied to an object through a distance. This means that when a force is applied to an object through a distance, the object’s total energy will be affected.
What are the three essential conditions for work done by a force acting on an object?
1) Force must be applied on body. 3)The displacement of body should be in direction of force.
What two conditions must be met for work to be done on an object?
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.
Is work done when lifting an object?
As you are lifting the object you are doing work on the object. The work W done on an object by a constant force is defined as W = F·d. It is equal to the magnitude of the force, multiplied by the distance the object moves in the direction of the force.
What is work done on the system?
Work done on the system means something outside the system did something (other than heat flow into the system) to increase the internal energy of the system. Work done by the system means the system’s internal energy decreased as it did work on something outside the system.
What are the two essential conditions for work done by a force acting on an object?
For work to be done, it is essential that some force is applied to the object and the object displaces from its initial position. If these two conditions are satisfied, then the work is done.
Under which condition is work done?
Explanation: Work Is only done when an object is moved to a distance.
What must happen for work to be done apex?
Physicist stated that work is done whenever a force is exerted on an object so that it moves over a non-zero distance in the same direction as the applied force. So if the applied force is perpendicular to the direction of the resultant object’s motion, no work will be done.
What is the force required to lift an object?
If the object is lifted straight up at constant speed, then the force needed to lift it is equal to its weight mg. The work done on the mass is then W = Fd = mgh. We define this to be the gravitational potential energy (PEg) put into (or gained by) the object-Earth system.
What is work done by friction?
The work done by friction is the force of friction times the distance traveled times the cosine of the angle between the friction force and displacement; hence, this gives us a way of finding the distance traveled after the person stops pushing.
What are two things that have to happen for work to be done?
“Work is done on an object if two things happen: (1) the object moves as a force is applied and (2) the direction of the object’s motion is the same as the direction of the force.”.SOURCES:Dumas, Leila, and William G. Lamb, Ph.D. “Chapter 1, Section 1: Work and Power.” Holt Science & Technology: Forces, Motion, and Energy.
When do you work on an object in physics?
In classical physics terms, you do workon an object when you exert a force on the object causing it to move some distance. The amount of work you actually do may have little relationship to the amount of effort you apply.
When is work done on an object it is zero?
So the total work done is zero since the work done by person is the negative work done by the field leaving the total work done as zero. If there was a net amout of work done then the kinetic energy of the block would change.
When is work done on an object equal?
Keep in mind, the work done by gravity (when the system is the block) and the change in gravitational potential energy (when the system is the block and the earth) are equal in magnitude and opposite in sign. We can see that no matter what we choose the system to be, the physical results should come out to be the same!