Question

A square brass plate of side `1.0 m` and thickness `0.0035m` is subjected to a force `F` on its smaller opposite edges, causing a displacement of `0.02 cm`. If the shear modulus o brass is `0.4 xx 10^(11) N//m^(2)`, the value on force `F` is
A. `4 xx 10^(3)N`
B. `400 N`
C. `4 xx 10^(4)`
D. `1000 N`

Answer 1

Correct Answer - C
`F = etaA(x)/(h) = 0.4 xx 10^(11) xx 1 xx .005 xx (.02 xx 10^(-2))/(1) = 4 xx 10^(4)N`