Recent content by talaroue

I understand all of the mentione above, I am in EGN3400 aka Dynamics. But this is a very basic problem.

Homework Statement If a delicate istrument havng a mas of 5 kg is placed on a springof length L so tha its base just touches the undeformed spring and then inadvertly released from the position, determine the maximum deflection xm of the spring assuming (a) linear spring constant k=3000N/m...

for the second part I am stuck...here is my work... this is problem 11.25

I was right, i just couldn't figure out how to solve. That mkes me feel better! Thanks for everything you guys!

For 11.28 I am not sure if I understand what you mean? I derived V using the relationship to a, which is a=V*dV/dx. making it V=a*dx/dV. for 11.25 the actual question is determine the postion of the particle when V=6m/s

Homework Statement 11.28 I have to solve acceleration given the equation for acceleration given the intial velocity=3.6 m/s, and the V equation V=.18V0/x 11.25 I have to find the distance it travels using the information in the picture below Homework Equations The Attempt at a Solution

i tried solving without using u, and i got ln(0) at one point which is impossible to solve so i am once again stuck.

which is wrong because those sides do not equal each other when I plug in a number for k

I am stuck again, I solved the right side of the equation you created and got .6s. But on the left side i solved by substitution. Where u=1-kV du=k dV so the left side becomes... (1/k)ln(1-kV) over the intgral of V0=0 V1=4 m/s ...after everything cancels i have...

let me see if I can take it from here if I can't ill post what work I have done.

Homework Statement The acceleration of a particle is defined by the relation a=0.4(1-kV), where k is a constant. Knowing t=0 the particle starts from rest at x=4m and that when t=15s, V=4 m/s, determine... a)the constant k b)the postion when V=6m/s c) the maximum velocity of the particle...

oh, that makes more sense! Thank you!

Homework Statement The acceleration of a particle is directl porportional to the square of the time t. When t=0s, and the particle is at x=24m. Knowing that at t=6s, x=96m, and V=18m/s, express x and v in terms of t. Homework Equations a=t2 The Attempt at a Solution so i...

I have a better understanding now I believe is this the correct value for P and W... P=width*specfic weight*hieght*height*(1/2) =.5m*(9800N/m^3)*.93 m* .93m *.5m=2119.005 N W=(area of triangle+area of rectangle)*9800 =(.5*.64*.48)+(.64*.45)=.4416*9800=4327.68 N

Homework Statement A 0.5 x 0.8m gate AB is located at the bottomof a ank filled with water. The gate is hinged along its top edge A and rests on a frictionless stop at B. Determine the reactions at A and B when cable BCD is slack. Homework Equations Fx=0 Fy=0 The Attempt at a...