Your physics teacher instructs you to determine the density of a rectangular block of unknown material. You are only allowed to use a ruler and a spring scale that measures newtons of force.

(A) Outline the experimental procedure you would use to gather the necessary data. Indicate the measurements to be taken and how each measurement will be used to obtain the data. Make sure your outline contains sufficient detail so that another student could follow your procedure and duplicate your results.

(B) Next, your teacher asks you to find the density of an irregularly shaped rock. What additional equipment might you use to determine an accurate density of the rock, and how would you use it?