Homework Statement
The displacement y of a long string at position x and time t is given by
y(x,t) = cos (kx-wt) + sin (kx-wt)
Show that the motion of the string at any point is SHM.
The Attempt at a Solution
As far as i know this is something to do with adding 2 waves together...
Homework Statement
If you are standing on a rotating disk which is rotating at a constant angular velocity and you walk with a speed v along a straight radial line, then what are you velocity and acceleration?
Homework Equations
The Attempt at a Solution
I just wanted to check if...
I don't know exactly where to go since i am confused about what it is asking for exactly. And to find the value for delta i will be using the tan (delta) = (1/w' tau) and then i guess i can substitute w' = 2*pi/ T' in there and go from there?
A damped harmonic motion starts from rest at time t=0 with displacement A0 has the equation:
x(t) = A0/cos (delta)*e^(-t/tau) *cos (w't + delta)
w' is the angular frequency, tau is the time constant and delta is given by:
tan (delta) = - (1/w' tau)
find the time when the maximum...
I am a bit confused in this problem.
A person of mass 80 kg takes a bungee jump. At the lowest point of the jump the bungee cord is 90m in length and then at the lowest point of the next oscillation the cord has a length of 80m. when the person does eventually come to rest the length of the...
The rotor of an electric motor has Im[SUB]= 2 x 10 -3 Kg.m2
about its central axis. The motor is used to change the orientation of a space probe in which it is mounted. If the axis of the motor is mounted parallel to the axis of the probe (I[SUB]p= 12 Kg.m^2) calculate the number of rotations...