Recent content by rAz:DD

Thanks! http://img23.imageshack.us/img23/4251/81187915.jpg I see a triangle with the first angle tetha, the second one 2*pi-alpha, therefor the needed angle is: 2*pi-tetha-(2*pi-alpha) = alpha-tetha. Still, i believe this answer is wrong, because Gx and Gy should depend on the beta angle too...

Can someone please help me?

Hi semc How do i express G on the X Y axis (where x is the bar axis) ? I've got that tetha angle, but i can't find a right triangle there. I tried to consider the Y axis having the same direction as G, but it's the same problem with the forces of reaction from A and B.

Homework Statement Hi. Given a homogeneous bar of gravity G,the length AB = 2L, resting without friction on the two inclined planes with the angles alpha and beta to the horizontal, as shown in the following figure: http://img44.imageshack.us/i/pic01ns.jpg/ Is is demanded: 1) The tetha...

I've written Gx = G / cos a = T and got a strange result, but i realize now it was a math fail; the correct answer should be c) 141N right ?

Homework Statement A body of mass m = 10kg is suspended by a fixed support through a perfect wire. The body is resting on the vertical support to another disk, so that the thread formed with a vertical angle α = 45 °, as shown. The tension from the wire has the value: a. T = 41N b. T =...

Thanks for the answer And sry for that dv/dt part, i wanted to type the greek letter delta and i didn't know whether tex codes are active or not.

Homework Statement A mobile is moving straight as following: the first portion of the road, equal to 10% of the total distance with the speed v1=10/s , and the rest with the speed v2=30m/s. The average speed for the entire trip is? a)25m/s b)22.5m/s c)20m/s d)15m/s Homework Equations...

Homework Statement Two moles of an monoatomic ideal gas are experiencing an adiabatic transformation; during this time the temperature modifies from T1=400K to t2=277^o C. What's the value of the mechanical work exchanged by the gas with the exterior? Homework Equations The...