Recent content by sailsinthesun

Homework Statement The cutting force developed during a particular machining operation is shown in figure (a). Model the system as a SDF with equivalent mass of the cutting head = 25 kg. The damping is linear viscous (ξ = 0.1), and the equivalent spring is nonlinear “hardening” spring of...

Thanks for getting the picture posted hypersniper. That does look like you're on the right track but I'm not sure about the placement of A due to forces. It does seem that if rods are all expanding, the point A would move to the right slightly and cause both 60* angles to be slightly larger.

Well since temperature is increasing it will increase the forces in all rods due to expansion. The FBD is point A with Fb to the left, Fc to the right and 60* above horizontal, and Fd to the right 60* below horizontal. One source of confusion is that my equation involves deltaT or change in...

Homework Statement http://uploader.ws/upload/201009/problem.jpgHomework Equations Sum Fx=0 Sum Fy=0 displacement=alpha*(DeltaT)*L displacement=sum of (P*L)/(A*E) The Attempt at a Solution I'm really not even sure where to start. I have a FBD drawn with Fb, Fc, and Fd and these equations...

Homework Statement Using Green's Theorem, (Integral over C) -y^2 dx + x^2 dy=____________ with C: x=cos t y=sin t (t from 0-->2pi) Homework Equations (Integral over C) Pdx + Qdy=(Double integral over D) ((partial of Q w.r.t. x)-(partial of P w.r.t. y))dxdyThe Attempt at a Solution I'm...

Thanks a lot. :)

So using equilibrium equations we get Sum of moments about d=0 and (400lb*2ft)-(7ft*W)-(250lb*1ft)=0 then solve for W correct?

Sorry I guess the picture I posted didn't show up. I tried another hosting site, is it showing up now?

Homework Statement The platform assembly has weight 250lb and a center of gravity at G1. If it is intended to support a maximum load of 400lb at G2, determine the smallest counterweight W that should be placed at B in order to prevent the platform from tipping over...

Homework Statement Two blocks are free to slide along a frictionless wooden track ABC as shown in Figure P9.20. The block of mass m1 = 5.02 kg is released from A. Protruding from its front end is the north pole of a strong magnet, repelling the north pole of an identical magnet embedded in the...

[SOLVED] Particle in hemispherical bowl Homework Statement A 195 g particle is released from rest at point A along the horizontal diameter on the inside of a frictionless, hemispherical bowl of radius R = 31.0 cm. http://www.webassign.net/pse/p8-52.gif (a) Calculate the gravitational...

Homework Statement A 4.05 kg object is attached to a vertical rod by two strings as in Figure P6.11. The object rotates in a horizontal circle at constant speed 6.50 m/s. http://www.webassign.net/pse/p6-11.gif (a) Find the tension in the upper string. (b) Find the tension in the lower...

Homework Statement Consider a conical pendulum with a 81.0 kg bob on a 10.0 m wire making an angle of theta= 2.00° with the vertical. (a) Determine the horizontal and vertical components of the force exerted by the wire on the pendulum. (b) What is the radial acceleration of the bob...

Even if the rope goes through a pulley? So that means T1=T2=T3? Ahh, just solved it. Thanks for all of your help. T1=T2=T3=Mg/2 and since T4=T1+T2+T3, T4=(3Mg)/2 and since F=T1, F=Mg/2

So the downward force would be T1+T2+T3? Meaning T4=T1+T2+T3? And how do I relate these tensions to M and g?