Homework Statement
A particle moves along the x axis. It is moving initially at the position 0.280 m, moving with velocity 0.200 m/s and acceleration -0.450 m/s^2. Suppose it moves with constant acceleration for 4.10 s.
(a) Find the position of the particle after this time...
that is true but this is the formula i derived but i hope its right
I = m*[L^2/12 + (R2 + L/2)^2]
then plug that into power formula
P = 1/2* I * ωf^2/ Δt
the issue is what should L in both parts of the I equation? I know R2 is 0.17 m / 2 to get .085 radius
Homework Statement
The head of a grass string trimmer has 100 g of cord wound in a light, cylindrical spool with inside diameter 3.00 cm and outside diameter 18.0 cm as shown in the figure below. The cord has a linear density of 10.0 g/m. A single strand of the cord extends 16.0 cm...
my homework has a pratice version and it said those values were zero i kinda guessed because i tried setting it up having Wext + Usi + k1i + k2i = k1f + k2f + Usf
but i got a nasty equation in the end i can't solve for vf
looks like this (keep in mind I just started calculus this semester so...
Homework Statement
A light spring of force constant 4.00 N/m is compressed by 8.00 cm and held between a 0.250 kg block on the left and a 0.560 kg block on the right. Both blocks are at rest on a horizontal surface. The blocks are released simultaneously so that the spring tends to push them...
I got 0.000 watts using that method but that doesn't sound right because my efficiency calculations after are barely 1% and this data should keep to where they don't get above 80% according to the professor
Homework Statement
The power available (output) is measured by the velocity at which you are moving and the thrust
required to create that movement. NOTE: Conversions for proper units are provided below
equation.
Power Available: Pout = Tc * v
where: Pout = power available (watts)
Tc...