Homework Help: physics

Posted by Anonymous on Monday, December 5, 2011 at 10:03am.

a block(500N) is being pulled along a surface having coefficients of kinetic and staic friction of 0.45 and 0.5 respectively..draw a free body diagram of the block and find the minimum force that can be applied to the block at an angle 15° below the surface to keep the block moving once it has started to move.

physics - bobpursley, Monday, December 5, 2011 at 10:21am
assuming the surface is horizontal.

pulling force horizonatl=mu*(mg+force*sinAngle)
Force*cosAngle=mu*(mg+force*sinAngle)
solve for Force.

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