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Question: Assume that the Titanic is drifting in Southampton harbor before its fateful journey and the captain wishes to stop the drift by dropping an anchor. The iron anchor has a mass 4000 kg. It is attached to a massless rope. The rope is wrapped around a reel in the form of a solid disk of radius 0.150 m and mass 400 kg, that rotates on a frictionless axle.
a) While the anchor continues to drop through the water, the water exerts a drag force of 2500 N on it. With what acceleration does the anchor move through the water?
b) While the anchor drops through the water, what torque is exerted on the reel?
There is a couple of previous parts to this question, the first part asked what was the acceleration of anchor as it fell through the air and it came out to be 9.33 m/s2. To solve that I substitued for moment of inertia with 1/2MR^2 and moved things around on the equation ma = mg -T. For part a here I simply used my equation of combining torque and free body diagram and subtracted 2500N from the total weight of the anchor but that does not give me the correct answer. Part B should be easy if part A is solved. Help please? Thanks
a) While the anchor continues to drop through the water, the water exerts a drag force of 2500 N on it. With what acceleration does the anchor move through the water?
b) While the anchor drops through the water, what torque is exerted on the reel?
There is a couple of previous parts to this question, the first part asked what was the acceleration of anchor as it fell through the air and it came out to be 9.33 m/s2. To solve that I substitued for moment of inertia with 1/2MR^2 and moved things around on the equation ma = mg -T. For part a here I simply used my equation of combining torque and free body diagram and subtracted 2500N from the total weight of the anchor but that does not give me the correct answer. Part B should be easy if part A is solved. Help please? Thanks