1.1. The speed v of a transverse wave on a uniform string is given by the expression

$v=\sqrt{\frac{Tl}{m}}$

where T is the tension in the string, l is its length and m is its mass.

An experiment is performed to determine the speed v of the wave. The measurements are shown in Table 1.1.

Table 1.1

Use the data in Table 1.1 to calculate the speed v.

v = ................................................. m s^–1 

1.2. Use your answer in (a) and the data in Table 1.1 to calculate the absolute uncertainty in the value of v.

absolute uncertainty = ................................................. m s^–1