Find the mass of the picture hanging from a steel nail as shown in Figure 5.17, given
Question:
Find the mass of the picture hanging from a steel nail as shown in Figure 5.17, given that the nail bends only 1.80 μm. (Assume the shear modulus is known to two significant figures.)
Strategy
The force on the nail (neglecting the nail’s own weight) is the weight of the picture w. If we can find w, then the mass of the picture is just
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