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Grade: 11
        
A stone tied to a string of length L is whirled in a vertical circle and other end of a string is at the centre. at a certain instant of time, the stone is at its highest position, and has a speed u. The magnitude of change in the velocity has it reaches a position where string is horizontal is 
one year ago

Answers : (1)

Arun
23013 Points
							
Dear student
 
 
The portion of Velocity change –
change in velocity = v jcap – u icap
and the magnitude of change in velocity =>
whole uder-root ( Vsquare + U square + 2 * V * U * Cos90 )
=> whole under-root (Vsquare+Usquare +0 )                           (as cos90 = 0)
=> whole under-root (Vsquare+Usquare) 
 
So, we have to find the value of (Vsquare+Usquare) ,i.e., 
whole under-root   [2*{U square – gl }]
 
Regards Arun
one year ago
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