Two donkeys are tied to the same pole.One donkey pulls the pole at a strength of 5N in a direction that is a 50∘ rotation from the east.The other donkey pulls the pole at a strength of 4N in a direction that is a 170∘ rotation from the east.What is the combined strength of the donkeys' pulls?Round your answer to the nearest tenth. You can round intermediate values to the nearest hundredth.N
Q. Two donkeys are tied to the same pole.One donkey pulls the pole at a strength of 5N in a direction that is a 50∘ rotation from the east.The other donkey pulls the pole at a strength of 4N in a direction that is a 170∘ rotation from the east.What is the combined strength of the donkeys' pulls?Round your answer to the nearest tenth. You can round intermediate values to the nearest hundredth.N
Representing the forces as vectors: Represent the forces as vectors.The first donkey pulls with a force of 5N at a 50° angle from the east. This can be represented as a vector with components (5⋅cos(50°),5⋅sin(50°)).The second donkey pulls with a force of 4N at a 170° angle from the east. This can be represented as a vector with components (4⋅cos(170°),4⋅sin(170°)).
Calculating the first donkey's force components: Calculate the x and y components of the first donkey's force.For the first donkey:x-component =5×cos(50°)≈5×0.64279≈3.21395y-component =5×sin(50°)≈5×0.76604≈3.8302
Calculating the second donkey's force components: Calculate the x and y components of the second donkey's force.For the second donkey:x-component =4×cos(170°)≈4×(−0.98481)≈−3.93924y-component =4×sin(170°)≈4×0.17365≈0.6946
Finding the resultant vector: Add the x-components and y-components of both vectors to find the resultant vector.Resultant x-component = 3.21395+(−3.93924)≈−0.72529Resultant y-component = 3.8302+0.6946≈4.5248
Calculating the magnitude of the resultant vector: Calculate the magnitude of the resultant vector to find the combined strength of the donkeys' pulls.Magnitude = (x-component2+y-component2)Magnitude ≈((−0.72529)2+(4.5248)2)Magnitude ≈(0.52605+20.4738)Magnitude ≈(20.99985)≈4.583
Rounding the magnitude of the resultant vector: Round the magnitude of the resultant vector to the nearest tenth. The combined strength of the donkeys' pulls ≈4.6N
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