Recent content by maskd

  1. M

    Circular motion - pointers of a clock

    Thanks for the answer, but I actually found out where the error was. As I considered the angular velocity in rad/s, the initial angle should be in radians, but I used 270 where I should use 3*pi/2. By doing this substitution, I finished up with the same answer given by your method: 49 + 1/11...
  2. M

    Circular motion - pointers of a clock

    (a) What's the time between 9h and 10h in which the minute and hour pointers are equal? (b) After midday, what's the first time in which the three pointers are equal? For (a), I tried to do: \Theta = \Theta_0 + \omega_{hours} \cdot t \omega = \frac{2 \cdot \pi}{T} \Theta_0 = 270^o...
  3. M

    Relative velocity question - plane and wind

    Relative velocity question -- plane and wind The distance between two cities A and B is l. An airplane travels back and forth between A and B, flying in a line, with velocity V relative to the air. (a) Find the total flight time, if the wind blows with velocity v, in a direction that forms an...
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