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# Friction, Work, And Kinetic Energy - Lab Report Example

## Extract of sample Friction, Work, And Kinetic Energy

Static friction is denoted as Fstatic. An inequality has been modified; Fstatic ≤ ms N where i ms is the coefficient of static friction and N is the normal force exerted by a surface on the object. The normal force is defined as the perpendicular component of the force exerted by the surface. In this experiment, the normal force is equal to the weight of the object because it’s on a horizontal surface
Exertion of enough force to move the box requires that the same or more force be applied to keep the box moving to the desired direction to prevent loss of equilibrium which will cause it to stop moving. The friction acting on the box while it is moving is called kinetic friction (Hugh and Roger 2008). In order to slide the box with a constant velocity, a force equivalent to the force of kinetic friction must be applied. Static and kinetic friction depends on the surfaces of the box and the floor and on how hard the box and floor is pressed together. Kinetic friction is modeled with Fkinetic = µk N where µk is the coefficient of kinetic friction. In general, this coefficient is less than that for static friction.
The mass of the container was measured and recorded. Motion detector was connected to the PC with a USB cable. Kinetic friction icon on the desktop was double clicked to open the program for data collection and analysis
A plastic ball was placed on the track and the track leveled by adjusting the track’s feet for the ball to stay in rest. The Motion Detector was placed on the track and positioned so that it could detect the motion of the block as it was sliding towards the detector.
No, the kinetic friction does not depend on speed. It only depends on the surfaces in contact. From the data collected during the experiment, it is evident that the speed/velocity of the sliding block does not affect the coefficient of the kinetic ...Show more

## Summary

Trying to slide any object leads to creation of an opposite force , that demands more force to be applied to the object for it to move hence more work is required. The opposite force that opposes the force being applied to the box is static friction. Application of a light…
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