mechanic

  1. T

    Proper Name of Pulley Mechanic shown?

    i was wondering if there is a proper name to this mechanic specifically, beyond conservation of energy etc. Something where someone knows exactly effective mechanic used. . From here this goes to not just adding a multiplying pulley system on tail of other , but insetting it inside to pull 2x...
  2. S

    Two mechanic question

    1. a block with mass m slides on a horizontal surface. the block is intially at x=0 with velocity v0. the frictional force that the block experience is proportional to v^(3/2) such that F(v)=-kv^(3/2) for positive constant K. what is the max distance that the block travel? 2. a...
  3. N

    Conservation of Mechanic Energy Problem, Help Please.

    Here is the question A projectile with a speed of 40m/s at an angle of 60 DEGREES above the horizontal. Find the maximum height reached by the projectile during it's flight by using conservation of energy. Now when I go to use conservation of mechanical energy, I don't understand what to do...
  4. arbolis

    Classical mechanic problem/pulley-mass

    I'm really clueless about how to start to solve this problem. Two cords A and B support a body of mass m=100 kg. The B cord pass by a pulley (we don't consider friction) and the 2 extremes of B are attached to the body. An extreme of A is attached to a wall and the other part is attached to...
  5. arbolis

    [SOLVED] Classical mechanic problem/energy laws help

    I didn't try my best to solve it, but really I'm not so sure and never done such an exercise so I'd like to see how to solve those types of exercises. A projectile is fired horizontally by a canon situated a platform at an height of 44 m. It is fired with an initial velocity of 244 m/s...