SI units
 

SI units problem 23


  • Determine the SI base units of stress. Show your working.


  • A beam PQ is clamped so that the beam is horizontal. A mass of is hung from end Q and the beam bends slightly, as illustrated in the figure below.




    The length of the beam from the edge of the clamp R to end Q is . The width of the beam is and the thickness of the beam is . The material of the beam has Young modulus .


    The mass is made to oscillate vertically. The time period of the oscillations is .


    The period is given by the expression:




    Determine in .


 

main author and content editor: Joanah Frank