Homework Statement
An engineer designing a system to control router for a machining process models the system so that the router's acceleration (in in/s2) during an interval of time is given by a= -0.4v, where v is the velocity of the router in in/s2. When t=0, the position is s=0 and the...
Homework Statement
The direction cosines of the force F are cos \varthetax= .818, cos\varthetay= .182, cos\varthetaz= -.545. The support of the beam at O will fail if the magnitude of the moment of F about O exceeds 100 kN-m. Determine the magnitude of the largest force F that can safely be...
So when I draw the free body diagram, the friction force is an arrow parallel to slope, and in the direction of the positive X-axis(the car going UP the incline)? I thought that friction forces act in the opposite direction the object is moving?
Homework Statement
The 2800lb car is moving at constant speed on a road with the slope shown. The aerodynamics forces on the car are the drag D=280 lbs, which is parallel to the road, and the lift L = 112 lb, which is perpendicular to the road. Determine the magnitudes of the total...
An integral is like asking you for an anti-derivative. So that question is basically asking you the antiderivative of 3 with respect to x, which is _____________?
I just tried both part a and b and they worked out to the correct answer. Thanks a lot. My professor never really explained how to do these type or problems, he just told us the equations for certain objects are listed in the book. Anyway, I finished my review so thanks again.
Ohhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhh.
So I do (1/12)(.1)(1) for the Inertia of the meter stick and then I find the Inertia of the particle itself which I assume would be the equation I=mr2. The radius would be how far the particle is from the center of the meter stick, which is 50 cm or .5...
OK, I thought I understood what you meant but i got the same answer :(. I did the first part for the .4kg (I= (1/12)ML2. So I did I= (1/12)(.4)(12)= .03333. Then I did it for the mass of the meter stick. I=(1/12)(.1)(12) and I got .0083333. Add them together and you get .0416 which is...
Yeah, I brought the problems with me to work and read through it again and realized that they gave the radius in part B. I feel stupid for asking that now.
I realized what I did wrong in the first problem. I missed the fact that they gave me a radius in part B of the question.
As for...
I have a test Monday and I'm trying some review problems my professor gave us to study from. I'm not looking for answers I'm just looking for someone to help step me through a few of these problems. Thanks for any and all help you guys can provide.
Homework Statement
3a). After starting...