An atomic force microscope cantilever, of rectangular cross section,

has a length, L of 200πœ‡π‘š
a width, b of 20πœ‡π‘š
and a depth, h of 1πœ‡π‘š
It is made of silicon nitride, which has a Young's modulus, 𝐸 of 300πΊπ‘ƒπ‘Ž.
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%?