Q5.Take a meter long thread of different fibres- nylon, cotton and silk of same thickness. Test the strength of threads one by one by tying the weights to one end of the suspended thread as shown in the figure. Based on the observations, answer the following:- (a) _______ fibre breaks with the maximum weight. (b) __________ fibre breaks with the minimum weight (c) List the fibres in order of their increasing strength.
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Answer:Much more weight is required to break the nylon thread showing that nylon thread has a grater strength that the cotton thread. Activity -Take threads of cotton and nylon(synthetic fibres) of about same length and thickness.. Hang cotton, thread from a stand. ... This gives a measure of the tensile strength of the thread
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