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Vikki [24]
3 years ago
5

An injured monkey sits perched on a tree branch 3.0 m above the ground, while a wildlife veterinarian is kneeling down in the bu

shes 87.5 m away attempting to subdue the monkey with a tranquilizer gun. the vet knows that the moment the gun fires the monkey will be frightened and fall down from the branch. what angle up from the ground must the veterinarian aim the gun so that the tranquilizer dart will hit the falling monkey?
Physics
1 answer:
Irina18 [472]3 years ago
6 0

here in the given situation if monkey starts free fall at the same instant when veterinarian shoots towards it then we know that vertical component of motion of monkey and the dart will be same as under gravity

so here the dart will always hit the monkey because they both moves under same acceleration

so here for the angle we can use

tan\theta = \frac{H}{L}

now we have

H = 3 m

L = 87.5 m

now we will have

tan\theta = \frac{3}{87.5}

tan\theta = 0.034

\theta = 1.96 degree

so angle will be 1.96 degree above the ground

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A 0.500-kg glider, attached to the end of an ideal spring with force constant undergoes shm with an amplitude of 0.040 m. comput
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There is a missing data in the text of the problem (found on internet):
"with force constant<span> k=</span>450N/<span>m"

a) the maximum speed of the glider

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When the glider crosses the equilibrium position, x=0 and the potential energy is zero, so the mechanical energy is just kinetic energy and the speed of the glider is maximum:
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<span>Vice-versa, when the glider is at maximum displacement (x=A, where A is the amplitude of the motion), its speed is zero (v=0), therefore the kinetic energy is zero and the mechanical energy is just potential energy:
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<span>
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b) </span><span> the </span>speed<span> of the </span>glider<span> when it is at x= -0.015</span><span>m

We can still use the conservation of energy to solve this part. 
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</span>E=K_{max}=  \frac{1}{2}mv_{max}^2= 0.36 J
<span>
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d) <span>the </span>acceleration<span> of the </span>glider<span> at x= -0.015</span><span>m

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<span>
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we have already calculated it at point b), and it is given by
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