This is correct. It is not correct that the force exerted by the worker is zero. The worker must exert a force otherwise the crate will not move. Given that the crate is moving and that its acceleration is zero, what must be tru about the forces acting on the crate?Adrian Pete said:
In magnitude. The work done by fk is negative while the work done by F is positive.Adrian Pete said:
That's correct. You are welcome.Adrian Pete said:
Work done by several forces is the energy transferred to an object when multiple forces act on it, causing it to move. It is a measure of the force applied over a distance.
The work done by several forces is calculated by multiplying the force applied by the distance over which it is applied. This can be represented by the equation W = F * d, where W is work, F is force, and d is distance.
The unit of measurement for work done by several forces is joules (J). This is the same unit used to measure energy.
Yes, the work done by several forces can be negative. This occurs when the force applied is in the opposite direction of the motion of the object. Negative work represents energy being taken away from the object.
The angle between the force and displacement affects the work done by several forces through the use of the cosine function. The work done is calculated as W = F * d * cosθ, where θ is the angle between the force and displacement vectors. This means that if the force and displacement are in the same direction (θ = 0), the work done will be at its maximum. If they are perpendicular (θ = 90 degrees), the work done will be zero.