1 answer

09: Below are drawings of three strings hanging from a bar. The three strings have metal...

Question:

09: Below are drawings of three strings hanging from a bar. The three strings have metal weights attached to their ends. Stri
09: Below are drawings of three strings hanging from a bar. The three strings have metal weights attached to their ends. String 1 and String 3 are the same length. String 2 is shorter. A 10 unit weight is attached to the end of String 1. A 10 unit weight is also attached to the end of String 2. A 5 unit weight is attached to the end of String 3. The strings (and attached weights) can be swung back and forth and the time it takes to make a swing can be timed 2 E 10 Suppose you want to find out whether the length of the string has an effect on the time it takes to swing back and forth. Which strings would you use to find out? Only one string Al three strings 2 and 3 1 and 3 1 and 2 Q10: because you must use the longest strings. you must compare strings with both light and heavy weights. only the length differ to make all possible comparisons the weighis differ

Answers

Correct options are : 1 and 2 because only the lengths differ.

Reason : To observe the effect of length on time period, it is better to keep all other parameters same, so that we can vary the length and record the time taken to complete one oscillation. Since the mass attached to string 3 differs from that attached to strings 1 and 2, we should not choose string 3 as a part of our experiment.

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