Two tugboats are towing a barge up the East River in New York City. Each tug is
ID: 1404253 • Letter: T
Question
Two tugboats are towing a barge up the East River in New York City. Each tug is pulling a barge with a long cable of negligible mass attached to the barge's bow. One tug is pulling the barge with a force of magnitude F at 25degrees east of north and the other with a force of magnitude F at 25degrees west of noth. The drag force due to the viscosity of the water is 400,000 N. If the barge is moving relative to the water at a constant velocity of 3.5m/s to the North, what is the magnitude F?
You you please go step by step and state which are given equations that should be knows?
Explanation / Answer
Here ,
let the magnitude of the force is F ,
Now , as the boat is moving with constant velocity ,
according to Newton's second law of motion
net force acting on the barge must be zero ,
Fnet - viscous force = 0
2 * F * cos(25) - 400000 = 0
F = 181262 N
the magnitude of force F is 181262 N
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