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1. Forces Table Earth. y. F t on b. x. ∑F x =0 ∑F y =F E on b + F t on b. F E on b. 2. Forces Table Earth. y. F t on b. x. ∑F x =0 ∑F y =F E on b + F t on b. F E on b. 3. Forces Table Earth Friction. y. F t on b. F fr on b. x. ∑F x =F fr on b
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1. Forces Table Earth y Ft on b x ∑Fx =0 ∑Fy =FE on b+ Ft on b FE on b
2. Forces Table Earth y Ft on b x ∑Fx =0 ∑Fy =FE on b+ Ft on b FE on b
3. Forces Table Earth Friction y Ft on b Ffr on b x ∑Fx =Ffr on b ∑Fy =FE on b+ Ft on b FE on b
4. Forces String Earth y Fs on b x ∑Fx =0 ∑Fy =FE on b+ Fs on b FE on b
5. Forces Table Earth String Friction optional-amount determines if motion is constant or accelerating y Fton b Ffr on b Fs on b x ∑Fx =Ffr on b + Fs on b ∑Fy =FE on b+ Ft on b FE on b
6. Forces String Earth y Fs on b x ∑Fx =0 ∑Fy =FE on b+ Fs on b FE on b
7. Forces Earth y x ∑Fx =0 ∑Fy =FE on b FE on b
8. Forces Air resistance Earth y Fa on b x ∑Fx =0 ∑Fy =FE on b+ Fa on b FE on b
9. Forces Earth y x ∑Fx =0 ∑Fy =FE on b FE on b
10. If we assume that r stands for rope, then the picture for number 4 or number 6 would produce this situation.