In: Physics
A 2.0 kg wood block is launched up a wooden ramp that is inclined at a 28 ∘ angle. The block's initial speed is 15 m/s . The coefficient of kinetic friction of wood on wood is μk=0.200.
What vertical height does the block reach above its starting point?
What speed does it have when it slides back down to its starting point?
Concept - work done by gravity while going up
is negative and work done by gravity while going down will be
positive. Hence the total work done by gravity for the round-trip
will be zero. We use work energy theorem to find the required
solution as shown below.***********************************************************************************************
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