What is the lowest temperature that a substance can reach
2 answers:
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As we know that sphere roll without slipping so there is no loss of energy in this case
so here we can say that total energy is conserved
Initial Kinetic energy + initial potential energy = final kinetic energy + final potential energy
as we know that ball start from rest
height of the ball initially is given as
also we know that
also for pure rolling
also we know that
now plug in all data in above equation
So speed at the bottom of the inclined plane will be 29 rad/s