Question

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Q2: A crate of mass "M" starts from rest at the top of a frictionless
ramp inclined at an angle of "a" above the horizontal. Find its
speed at the bottom of the ramp, a distance “d” from where it
started. Do this in two ways (a) Take the level at which the
potential energy is zero to be at the bottom of the ramp with "Y”
positive upward. (b) Take the zero level for potential energy to be
at the top of the ramp with "y" positive upward. (C) Why did the
normal force not enter into your solution?​

Answer 1

Answer:

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