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Free Body Diagrams. A book is at rest on a table top. A book is at rest on a table top. F W. A book is at rest on a table top. F N. F W. F W = F N. The same book is being pushed at a constant rate to the left. The same book is being pushed at a constant rate to the left. F W.

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## Free Body Diagrams

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**A book is at rest on a table top.**FN FW FW = FN**The same book is being pushed at a constant rate to the**left.**The same book is being pushed at a constant rate to the**left. FW**The same book is being pushed at a constant rate to the**left. FN FW FW = FN**The same book is being pushed at a constant rate to the**left. FN FA FW FW = FN**The same book is being pushed at a constant rate to the**left. FN FA FF FW FA= FF and FW = FN**The same book is now being accelerated to the left.**FN FA FF FW FA> FF and FW = FN**A bucket is being raised at a constant rate.**FT Force of tension FW FT = FW**A bucket is now being accelerated upward.**FT Force of tension FW FT > FW**A bucket is now being accelerated downward.**FT Force of tension FW FT > FW**A bucket is now being accelerated downward.**FT Force of tension FW FT < FW**A box is being pulled at an angle at a constant rate of**speed FA**A box is being pulled at an angle at a constant rate of**speed Fv FA Fh FW**A box is being pulled at an angle at a constant rate of**speed Fv FA Ff Fh FW F h = Ff**A box is being pulled at an angle at a constant rate of**speed Fv FN FA Ff Fh FW Fh = Ff FN = FW – Fv or FN< FW**Forces on an Inclined Plane, sliding down**Ff FII θ Fw**Forces on an Inclined Plane, sliding down**Ff FII F ⊥ θ Fw**Forces on an Inclined Plane, sliding down**Ff FII F ⊥ θ Fw FII**Equal Angle “Sign”**θ θ Fw**Equal Angle “Sign”**θ θ Ft 2 Ft 1 Fw**Equal Angle “Sign”**θ θ Fv2 Fv1 Ft 2 Ft 1 Fw**Equal Angle “Sign”**θ θ Fv2 Fv1 Ft 2 Fv2’ Ft 1 Fv1’ Fw**Equal Angle “Sign”**θ θ Fv2 Fv1 Ft 2 Fv2’ Ft 1 Fv1’ Fh 1 Fh 2 Fw**“The Crane”**θ Fw**“The Crane”**Ft θ Fw**“The Crane”**Ft θ Fv Fw**“The Crane”**Ft θ Fv Fc Fh Fw**“The Crane”**Ft Fv’ θ Fv Fc’ Fc Fh Fw

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