Ask Questions, Get Answers

Want to ask us a question? Click here
Browse Questions
0 votes

A 3cm cube has its upper face displaced by 0.1cm by a tangential force.If modulus of rigidity of material is $5\times 10^4N/m^2$.Find the force

$\begin{array}{1 1}(A)\;3N\\(B)\;7.5N\\(C)\;4.5N\\(D)\;1.5N\end{array} $

Can you answer this question?

1 Answer

0 votes
$\Delta l=.1$cm,$l=3$cm
$\eta=5\times 10^4N/m^2$
As we know
$F=\eta(\large\frac{\Delta l}{l})$$a$
$\;\;\;=5\times 10^4\times \large\frac{.1}{3}$$\times 9\times 10^{-4}$
Hence (D) is the correct answer.
answered May 7, 2014 by sreemathi.v

Related questions

Ask Question
student study plans
JEE MAIN, CBSE, NEET Mobile and Tablet App
The ultimate mobile app to help you crack your examinations
Get the Android App