Randall D. Knight — Traveling Waves: Problem 2

A wave pulse travels along a stretched string at a speed of 100 m/s. What will its speed be if a. the string’s tension is quadrupled (but its mass and length are unchanged)? b. the string’s mass is doubled (but its length is unchanged)? c. the string’s length is doubled (but its mass is unchanged)? Note: that each part is independent and refers to the changes made to the original string.