GIVEN WIRE UNDER CONSTANT TENSION USING SONOMETER · Part 2

keeping the same load in the hanger. OBSERVATIONS  Tension (constant) on the wire (mass suspended from the hanger including its own mass) T = (mass suspended × . ) N Variation of frequency with length Frequency of the tuning fork ‘n ‘ ( Hz ) Resonant length ‘l’ × − m nl n = n = n = n = n = n = UNIT- (XI- - ) PRACTICAL FIRST UNIT- (XI- - ) PRACTICAL FIRST - - - - Practical GRAPH : n ( Hz n ( Hz y y x x Graph : Relation between frequency and inverse of length Graph : Relation between frequency and length Sonometer - study of relation between length of the given wire and tension for a consant frequency l – (m – ) l (m) CALCULATION The product nl for all the tuning forks remain constant (last column in the table) RESULT • For a given tension, the resonant length of a given stretched string varies as reciprocal of the frequency (i.e., n l µ ) • The product nl is a constant and found to be (Hz m) UNIT- (XI- - ) PRACTICAL FIRST UNIT- (XI- - ) PRACTICAL FIRST - - - - Practical