Explain why soldiers are ordered to break steps while crossing a bridge?
Ans: Soldiers are ordered to break steps while crossing the bridge to
prevent the collapsing of bridge. When the frequency of soldiers steps
and the natural frequency of the bridges becomes equal, the bridge
vibrate with maximum amplitude and eventually bridge may collapse.
Subscribe to:
Post Comments (Atom)
Making nitriles from aldehydes and ketones
Making nitriles from aldehydes and ketones Aldehydes and ketones undergo an addition reaction with hydrogen cyanide....
-
Laboratory Preparation of Oxygen Oxygen is prepared in lab generally in two ways either by the application of heat or no application of he... -
1. What is wavefront and wavelet? Ans: The locus of vibrating particles in medium travelling in some phase at that instant is called w... -
Why is end correction necessary for an organ pipe? Ans: When an air is set into vibration in an organ pipe, the reflection of sound wave...
No comments:
Post a Comment