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Question 3 of 13 < > 0/1 : A cord is used to vertically lower an initially stationary block of mass M = 11 kg at a constant downward acceleration of g/7. When the block has fallen a distance d = 3.8 m, find (a) the work done by the cord's force on the block, (b) the work done by the gravitational force on the block, (c) the kinetic energy of the block, and (d) the speed of the block. (Note: Take the downward direction positive) (a) Number i ! Units (b) Number i (c) Number i 1 (d) Number i 1 ! ! Units Units Units
< 0/1 Question 5 of 13 : View Policies Show Attempt History Current Attempt in Progress * Incorrect. The force on a particle is directed along an x axis and given by F = Fo(x/xo - 1) where x is in meters and F is in Newtons. If Fo= 2.5 N and Xo = 3.7 m, find the work done by the force in moving the particle from x = 0 to x = 2x0 m. Number i 2 ! Units > III