Post a New Question

Physics

posted by on .

A string of mass m=.1kg is stretched to where its length is L=20m. What is the tension force applied to the string if it takes a pulse 2 seconds to get from one end to the other?

m=kg
L=20m
T=4s
mass density =m/L = .1/20 = kg/m
Tension =?

I know v=sqrt(F_t/mass density) But I'm given two unknowns. How would I find velocity?

  • Physics - ,

    Well, you said v = sqrt(F/.005)
    you also said the pulse goes 20 m in 2 s
    so
    v = 20/2 = 10 m/s
    so
    10 = sqrt (F/.005)
    100 = F/.005
    F = .5 N

Answer This Question

First Name:
School Subject:
Answer:

Related Questions

More Related Questions

Post a New Question