An atomic force microscope cantilever, of rectangular cross section,
has a length, L of 200ππ
a width, b of 20ππ
and a depth, h of 1ππ
It is made of silicon nitride, which has a Young's modulus, πΈ of 300πΊππ.
What is the maximum force that can be applied with the cantilever, if the maximum strain in the beam is to be limited to 0.1%?