Unit 4 Quiz 6. Four forces are acting on a hot-air balloon: F1 2280.0 N up, F2 2

Question

Unit 4 Quiz 6. Four forces are acting on a hot-air balloon: F1 2280.0 N up, F2 2280.0 N down, F3 85.0 N west, and F4 12.0 N east. What is the magnitude and direction of the net external force on the balloon? AKS 3 3b (DOK 2) Show the Forces and show the answer 7. The lorgest flowers in the world are the Raflesia arnoldi, found in Malaysia. A single flower is -almost a u cut off a single flower and drag it along the flat ground. If the coefficient of kinetic friction between the flower and the ground is 0.39, what is the magnitude of the frictional force that must be overcome? AKS 3_3c2 (DOK 2) Use GUESS Please answer the following questions. Points will be deducted if I cannot read your handwriting 8. If two teams playing tug-of-war pull on a rope with equal but opposite forces, what is the net external for ce on the rope? AKS 3_3a4 (DOK 2) 9. Distinguish between mass and weight. AKS 3_3c1 (DOK 1) 10. An elevator cable supports an empty elevator car of mass 300 kg. Determine the tension in the cable when the elevator car is at rest. Use GUESS AKS 3_3b (DOK 2) Draw the free body diagram and determine tension in the cable

Explanation / Answer

6) Since F1 and F2 are acting in opposite direction and have same magnitude so they nullify each other.Thus force in y-direction is zero.

Now since F3> F4 so net force will act in west and have maggnitude

Fnet=85-12=73 N

7)We know frictional force is given as

Ff=mu *N

Ff=mu*mg=0.39*11*9.8=42.04 N

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