- #1
kevin023
- 1
- 0
Answered. thank you
Last edited:
4200*0.09. Rest is OK.kevin023 said:the constant force times meter 4200*.9m
The work done by a variable force can be calculated by finding the area under the force vs. displacement graph. This can be done by dividing the graph into small rectangles and finding the area of each rectangle. Then, add up all the areas to find the total work done.
The main difference is that a constant force always has the same magnitude and direction, while a variable force can change in both magnitude and direction. This means that the work done by a constant force can be calculated using a simple formula (W = F * d), while the work done by a variable force requires more advanced methods.
Yes, work done by a variable force can be negative. This happens when the force and displacement are in opposite directions, resulting in a negative value for work. This can also happen if the force changes direction during the displacement, causing the work done to change from positive to negative.
The work done by a variable force can change an object's kinetic energy. If the work done is positive, it will increase the object's kinetic energy, and if the work done is negative, it will decrease the object's kinetic energy. This is because work done is directly related to the change in an object's kinetic energy.
No, work done by a variable force cannot be used to directly find the object's velocity. However, it can be used to find the object's change in kinetic energy, which can then be used to calculate the object's final velocity using the formula KE = 1/2 * m * v^2. Alternatively, the object's velocity can be found by using other kinematic equations.