In a children-park an inclined plane is constructed with an angle of incline 45o in the middle part (figure 6-E1). Find the acceleration of a boy eliding on It if
the friction coefficient between the cloth
of the boy and the incline is 0.6 and g = 10 m/s2.

let the mass of the boy= m
Angle of inclination θ= 45o
Coefficient of friction
= 0.6
According to the figure given below,

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The force due to which boy is sliding down is
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Acceleration of the boy a=
=
=
m/s2