Question

waves propagate down a 25gram string at 35 m/s. If the string has a length 1.5 meters, what iss the magnitude of the tension acting along it? i am stuck on how to figure this one out any help would be appriciated.

Answer 1

Mass per unit length
m(o) = m/L = 0.025/1.5 = 0.0166 kg/m
Velocity in the stretched string is
v = sqrt(T/m(o)).
T = m(o)•v^2 = 0.0166•(35)^2=20.34 N

Answer 2

Thank you

Answer 3

A hydraulic lift of the type shown below is used to raise a car weighing 15,000 N. The piston that supports the car has a diameter of 36 cm. What pressure of air within the system is required to just hold the car in place?