the
What will be the work done by
tension Tof
T of an inextensibe
string during
of small displacement
Answers
Answer:
don't know.........also didn't understand the question.....hmmm..........
Answer:
WORK DONE BY STRING - DEFINITION
There are two ways to find out the work done by the string:
By observation on inextensible strings of constant lengths: In this method, we move any one block of system observe how the length of string is being shifted from one side of pulley to other side and analyze the motion of movable pulley too. In case of a moving pulley, it pulls double the length of string from either side whereas in case of a fixed pulley change in length in string on one side is compensated by change in length of string on the other side.
By method of Virtual Work: In this method, we consider total work done by ideal string to be zero in displacement of blocks of system, (as we know ideal string is massless which can never gain or supply energy). To analyze the same we consider different displacements of the blocks and calculate work done by strings on blocks by taking scalar product of string tension to the displacement of the block and equate total work to zero which gives us the relation of displacements of all the blocks of the system which, in turn gives us the relation in velocity and accelerations.