Recent content by honestliar

Homework Statement An object starts from rest w/ a constant acceleration of 8m/s^2 along straight line. a)find the speed at the end of 5 sec.------40sec b)the ave. spped for the sec interval------20m/s A stone is thrown vertically upward w/ an initial velocity of 49m/s a)How long does it...

Homework Statement An 8.00m uniform ladder whose mass is 55 kg is resting against a frictionless wall. Its lower end is 750cm from the wall. If the coefficient of static friction between the floor and the lower end of the ladder is 0.60, calculate the reactions on both side of the ladder...

Homework Statement A 5m uniform ladder weighing 120N is placed against a smooth wall in such a way that it makes 60 degrees angle w/ the horizontal. A man weighing 480N climbs up the ladder and stairs 1.5m from its upper end. a. Find the force exerted by the wall against the ladder. (N1)...

Homework Statement A system cord is knotted at point 0. Determine the angle of the force exerted at cord c If the mass of the hanging block is A=850g(8.34N) the tension in B=42N (the angle of Cord B is 25 degrees from the X-axis) The Image: http://tinypic.com/m/5ani0y/3 Homework Equations...

no, that's all

I have no basic idea about this lesson, how can you solve for this problem? http://tinypic.com/m/5aizk3/3 thanks