Homework Statement
A projectile of mass 1 kg is launched from ground level toward the east at 200 metres per second, at an angle of pi/6 to the horizontal. A northerly win applies a force of 2 Newtons to the projectile. Find the location of the projectile and its speed at impact.
Homework...
Homework Statement
lim -> 0 (sin(x)-x) / x^3
Homework Equations
L'Hospital's Rule
The Attempt at a Solution
I could just use L'Hospital's rule since it's 0/0. However, the answer is wrong when I do it that way. What am I missing? It states on the question that it must be...
Homework Statement
A tank is initially filled with 1000 litres of brine, containing 0.15 kg of salt per litre. Fresh brine containing 0.25 kg of salt per litre runs into the tank at the rate of 4 litres per second, and the mixture (kept uniform by stirring) runs out at the same rate. Show...
Thanks for the replies. What happens if vectors aren't connected like the ones on the diagram I posted. There are vectors in the same direction and different directions, but they are all separate.
Also, on question b on the diagram, it asks to find the sum of moments at B. That's what I'm...
Homework Statement
http://img41.imageshack.us/i/photolu.jpg/
Homework Equations
Right Hand Rule
The Attempt at a Solution
I have to find the moments at B. I know I have to use the right hand rule to figure out which force has a positive and which force has a negative action...