During an experiment, a block of mass M=0.20kg is placed on a disk that rotates about an axle through its center, as shown in the diagram. The block is moved to different distances R from the axle, and the tangential speed of the block is gradually increased until the mass begins to slip. The distance and maximum tangential speed before slipping, vmax, are recorded. A student creates a graph of vmax2 as a function of R, as shown. How should the student use the graph to most accurately determine the experimental value of the coefficient of static friction μS between the block and the disk?
Responses
Determine the slope of the best fit line, and it will be equal to μS.
Determine the slope of the best fit line and set it equal to μSg.
Determine the maximum value on the curve and use the data from that point in the equation v2=μSgR.
Determine the midpoint value on the curve and use the data from that point in the equation v2=μSgR.
