To find the height of the incline, we can
use the conservation of mechanical energy principle. Since the incline is
frictionless, the initial potential energy of the block is converted into
kinetic energy as the block slides down.
1. Initial Potential Energy:
At the top of the incline, the block has
potential energy given by:
where:
(mass of the block),
(acceleration due
to gravity),
is the height of the incline (which we
need to find).
2. Kinetic Energy at the Bottom:
At the bottom of the incline, the block has
kinetic energy given by:
where:
is the velocity of
the block at the bottom.
So, the kinetic energy at the bottom is: