Recent content by blackandyello

Homework Statement A small wedge is placed beneath corner B of the 4000-kg block of marble. Determine the largest angle θ for which the wedge is self-locking; that is, the wedge will not slide out from under the block. Neglect the mass of the wedge and the small angle between surface AB and...

Homework Statement The horizontal force P acts on the rim of the homogeneous cylinder of radius R and weight W. Determine the smallest coefficient of static friction that enables the cylinder to start rolling up the 30◦ incline. Homework Equations *depends on the fbd. refer below...

Homework Statement The two homogeneous bars AB and BC are connected with a pin at B and placed between rough vertical walls. If the coefficient of static friction between each bar and the wall is 0.4, determine the largest angle θ for which the assembly will remain at rest...

bro, some part of the ice melts, and the other doesnt. madali lng yn homework :)

can somebody help me to know the proper way to solve this kind of problem. Five employees of a firm are ranked from 1 to 5 based on their ability to program a computer. Three of these employees are selected to fill equivalent programming jobs. If all possible choices...

i tried evaluating this http://www4a.wolframalpha.com/Calculate/MSP/MSP47881a005158fa72fi31000026df4f1iaf7g05e7?MSPStoreType=image/gif&s=49&w=109&h=39 and the correct answer r = 1.1147 and theta = 75.9 however, i tried to do it manually and ended with this...

when we say most efficiently? u pertain that it has to be in the same direction as the resultant?

Homework Statement Resolve the position vector A of the car (measured from fixed point O) into components parallel to OB and OC. Figure: http://screensnapr.com/e/4D2OAz.png Homework Equations Projection of vector A to OC = |A| * |unit vector OC| * unit vector The Attempt at a...

Homework Statement To move the oil drum, the resultant of the three forces shown must have a magnitude of 500 N. Determine the magnitude and direction of the smallest force F that would cause the drum to move. here is the figure: http://screensnapr.com/e/yliMVN.png Homework...

Hello, I am referreing to question 6.4a, (the one in black pen) http://i55.tinypic.com/2e2md0z.jpg tnx. I've tried my best but where did i go wrong? what's ur answer?

Homework Statement A factory worker pushes a 30.0-kg crate a distance of 4.5. along a level floor at constant speed by pushing horizontally on it. The coefficient of kinetic friction between the crate and the floor is 0.25. (a) What magnitude of force must the worker apply? Homework...