Recent content by jason_mcc

Thanks, got it now.

Homework Statement Hi everyone. All help is appreciated. The discharge over a rectangular notch is to be 0.14m3/sec when the water level is 0.23m above the sill. If the coefficient of discharge is 0.6 calculate the width of notch required. Answer: 0.716m Homework Equations I...

Ok \frac{dv}{dt}=-(9.81+\frac{v^{2}}{1000}) dv=(-9.81-\frac{v^{2}}{1000})dt \frac{dv}{-9.81-v^{2}/1000}=dt

Ok is it t=ln|-9.81-\frac{v^{2}}{1000}| ?

Is it v=-9.81t-\frac{v^{3}}{3000}\frac{dv}{dt} And then i sub back in for dv/dt?

Ok so far iv got F=98.1+0.01v^{2} ma=98.1+0.01v^{2} 10a=98.1+0.01v^{2} since mass is constant a=9.81+0.001v^{2} \stackrel{dv}{dt}=9.81+0.001v^{2} Am I on the right lines?

For the equation F=0.01v^{2} which value for v would I use to find the air resistance?

Hi everyone, any help you could give me I would appreciate. Homework Statement A 10 kg projectile is fired vertically upward from the ground, with an initial velocity of 50 m/s. Determine the maximum height to which it will travel if (a) atmospheric resistance is neglected, and (b) if...