Answer:
The string's mass and the maximum transverse acceleration are 2.2 g and 22400.51 m/s².
Step-by-step explanation:
Given that,
Length of string = 2.50 m
Tension = 90.0 N
Amplitude = 3.50 cm
Speed = 28.0
First overtone ,

(a). We need to calculate the mass of string
Using maximum transverse speed at antinodes



Put the value into the formula


Using formula of wavelength




Mass of string =

Mass of string =

Mass of string =2.2 g
(b). We need to calculate the maximum transverse acceleration of this point on the string
Using formula of the maximum transverse acceleration


Put the value into the formula


Hence, The string's mass and the maximum transverse acceleration are 2.2 g and 22400.51 m/s².