Having real problems understading my lecutre notes about this.
Can anyone do this question and explain how you get the answer please?
Determine whether or not there is a solution; if there is, find the General Solution.
18x = 21 mod 25
EDIT -(Oh and if that doesnt have a solution heres another:
6x = 5 mod 13)
If you wish to find the indicated angle in this diagram, it is arccos(20/30). The hypotenuse is 30 because the problem tells us that the bowl is a hemisphere, so the distance from the center to any point on the surface of the bowl is simply the radius, 30. Hopefully this is the mentioned angle you needed to solve the problem, if you need more pieces of the puzzle, just ask.
Thats it mate!!
Thanks v much!
Nope the links working John, mabey its just need to load? Ill put another at the bottom of this post though.
Its really a question about circular motion so you just forget about whats powering the ball. Just say its magnetism or something. And yes, gravity is involved.
The missing link im looking for is the angle which the Reaction force makes with the horizontal. With that im sorted.
I set off resolving forces around the reaction force and equating them to the weight and so on.
darn I hate this question! Theres no diagram but Ill copy the question out. Oh and the topics Parbolic motion.
A particle is projected at a speed of 45ms at an angle of 30 degrees above the horizontal.
(i) the speed and direction of the motion of the particle after 4 seconds,
(ii) the maximum height above the point of projection reached by the particle.
I can do (b) but the first two are the ones that got me. Anyhoo the answers are:
(i) 42.4 ms at 23.2 degrees below the horizontal
(ii) 25.8 m