An AP test booklet weighs 5kg, and is suspended from a pendulum length l, which has a fulcrum placed at (0, h) on the coordinate plane, after being held so that the string makes 60 degree angle with the x-axis. The average point charge (assuming a symmetrical spherical charge) of said booklet is +q. 1) If a negative particle charge -4q gradually approaches the fulcrum from infinity along the negative y-axis, determine the magnitude of acceleration of the students fleeing from the test for their lives. 2) If the pendulum swings from a fixed point suspended 4000km above Earths surface, the booklet is released at coordinate point (0,h-l) so that Usub(E)=0, and the grade received on said booklet is inversely proportional to the booklets velocity, then a) Graph the relationship between t(x) and grade(y), starting at t=0, and determine the x= asymptote denoting the value which y cannot equal b) Determine the grade of the test immediately before it hits the ground 3) If the magnitude of torque due to gravity is so that τ = −R m g sinθ, and the # of cares given= net torque, determine all the cares I give if θ= 180 degrees
Posted on: Mon, 12 May 2014 21:37:28 +0000
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