- #1
klmgirly
- 1
- 0
A box of mass 5.0-kg is accelerated from rest across a floor at a rate of 2.0m/s^2 for 7.0s. Find the net work done on the box?
W=Fd
W=Fd
Net work done on an accelerating box is the total amount of work that is done on the box as it moves from one point to another, taking into account both the work done by external forces and the work done by internal forces.
Net work done is calculated by multiplying the force applied on the box by the displacement of the box in the direction of the force. This is represented by the equation W = Fd, where W is the work done, F is the force, and d is the displacement.
Net work done takes into account both external and internal forces, while total work done only considers external forces. Net work done is a more accurate representation of the energy transferred to the box.
Yes, net work done can be negative. This occurs when the force applied on the box is in the opposite direction of its displacement, resulting in a negative value for work done. This indicates that energy is being taken away from the box rather than being transferred to it.
The net work done on a box is directly related to its change in kinetic energy. If the net work done is positive, the box's kinetic energy will increase, and if the net work done is negative, the box's kinetic energy will decrease. This is due to the work-energy theorem, which states that the net work done on an object is equal to the change in its kinetic energy.