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Mors
Answers (15)
Watch out: w > [something] and [something] has positive sign
Ha, I got it! It's easy. They're asking about the minimal angular velocity of the disk so the ball sticks to the outer wall of the slot. If you answered for Q1-2 Ground Frame Acceleration, you can easy find the right answer for this one, too. -Forget about
i will not give the simple answer, but look at one of the exercises from previous problem sets or V6-3 Quiz Review 1-3 and do exactly the same things. ?Choose correct Free body diagrams, find relation between x and y, write your equations of motion for
The quizz is rather easy, but the third part of this question is literally killing me. I know that it has to be terribly simple, but i can't find the good answer (only one try left, and this question is worth 4% of the total course score) here's the image
A partial answer: [vvv][.][jiskha][.][com/display][.][cgi?id=1384802640] "Some serious direction on the third part would be great." - I totally agree
to find aB: take the vB and differentiate it: ask yourself a question, which factor changes in time? Use chain rule. Don't forget about vectors i and j. Do they change in time? What do they give when differentiated? (see Derivative of a vector in a
to find vB: Find the center of rotation of the disk. Take the distance between the center you've just found and the center of the ball. Ask yourself a question: How to find a linear velocity of a point on the rotating disk (it's a function of omega and L)?
Redraw the Axy coordinates system on a piece of paper, draw x horizontally and y vertically. Place the ball B on your drawing. x position is easy to find, y is a function of 45deg and L. To find vrel: Look at the drawing in the exercise and draw the same
Q2_2: I've found it by myself Here, the solutions Q2_2_1 -(q_0)/(6*L)*x^3 Q2_2_2 46*E_0*(pi*R_0^4)/4 Q2_2_3 a) -(q_0*x^3)/(69*L*E_0*pi*R_0^4) b) -(q_0)/(276*L*E_0*pi*R_0^4)*(x^4-L^4) Q2_2_4 -5.8 Q2_2_5 a)50.9 b)305.6 Now, go and f# yourselves, lazy sob's
What about the Q2_2? Provide me a drawing or a better (and EXACT) description of this problem
I didn't see the drawing (so I don't know the direction of t0), but: Q2_1_3: tau max=|tau min|=(3*t_0*L)/(pi*R^3) r tau max = R (it's obvious) x tau max =3*L Q2_1_4: phi max=(9*t_0*L^2)/(8*pi*G_0*R^4) x phi max=3*L/2 dphi/dx is a derivative of phi and it's
q(x)=q0xL ? Is it q(x)=q_0*x*L (linear) or q(x)=q_0*L (linear, but constant)? What is the relation between x and L? Write this precisely, please
q(x)=q0xL ? Is it q(x)=q_0*x*L (linear) or q(x)=q_0*L (linear, but constant)? What is the relation between x and L? Write this precisely, please
HW6_1B: (2*Q*L^2)/(G*pi*t*d_A^2*(L+x)^2) Why? You have to start by describing the linear function of diameter/radius variations (whatever) r(x)=(d_A/2L)*x+d_A/2 d_A(x)=(d_A/L)*x+d_A We can obtain I(x)=pi*t*d_A^3*(x+L)^3/(4*L^3) We know that
HW6_1A : 2*d_A^3*pi*t*G/(3*L )
