force gravity down= mg sin28
friction down: mg*mu*cos28
netforce=mass*acceleration
mg(sin28-mu*cos28)=ma
solve for mu.
A child goes down a playground slide with an acceleration of 1.36 m/s^2.
1-Find the coefficient of kinetic friction between the child and the slide if the slide is inclined at an angle of 28.0 deg below the horizontal.
1 answer