Homework Statement
The left-hand end of a long horizontal stretched cord oscillates transversely in SHM with frequency f = 250 Hz and amplitude 2.6 cm. The cord is under a tension of 140 N and has a linear density \mu = 0.12 kg/m. At t = 0, the end of the cord has an upward displacement 1.6...
Homework Statement
Problem: Two objects of different mass start from rest, are pulled by the same magnitude net force, and are moved through the same distance. The work done on object A is 500 J. After the force has pulled each object, object A moves twice as fast as object B. (a) How much...
Homework Statement
Two forces, Fa and Fb, act on an object located at the origin. Fa has a force of 4500 N and has an angle of 60 degrees with respect to the positive x-axis. Fb has an angle of 140 degrees with respect to the positive x-axis. Determine the force of Fb.
Homework...
I think I see now.
I set the initial height to 2.55 m and used that to determine the time for half of the trip, which was about 0.72 s. Multiply that by two, and the time for the whole trip is 1.44 s.
Thanks to both of you for your help!
Homework Statement
A kangaroo jumps to a vertical height of 2.55 m. How long was it in the air before returning to Earth?
Homework Equations
v = v(initial) + a*t
x = x(initial) + v(initial)*t + 1/2*a*t^2
v^2 = v(initial)^2 + 2*a*(x - x(initial))
The Attempt at a Solution
I...