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PandaBoy
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A 325-kg boat is sailing 15.0° north of east at a speed of 2.00 m/s. Thirty seconds later, it is
sailing 35.0° north of east at a speed of 4.00 m/s. During this time, three forces act on the boat:
a 31.0N force directed 15.0° north of east, a 23.0N force directed 15.0° south of west and F
Find the force F
Answer : [18.4N, 68.0° north of east]
Fr = F1 + F2 + F3 (due to 3 forces acting on it)
F3 = Fr - F1 - F2 (as question wanted to look for the 3rd force)
F1 = 31cos15° = 30.0N (to the right)
F2 = -(23cos15) = -22.2N (to the right. Or +ve to the left)
a = (v - u)/t
Do I need to search for the vertical, y and the horizontal, x component of the velocity to turn it into resultant Force? Through square root of (Fy^2 +Fx^2)? I do not understand the first 2 sentences of the question. So in the end they will turn into the resultant force acted on the boat? I am confused.
It is a relatively new topic in mechanics to me. I am sorry I could not even make a single line of solution.. >< i have no idea where to start calculating actually. Though I did forces of equilibrium before, this doesn't seems like anything from it.
sailing 35.0° north of east at a speed of 4.00 m/s. During this time, three forces act on the boat:
a 31.0N force directed 15.0° north of east, a 23.0N force directed 15.0° south of west and F
Find the force F
Answer : [18.4N, 68.0° north of east]
Fr = F1 + F2 + F3 (due to 3 forces acting on it)
F3 = Fr - F1 - F2 (as question wanted to look for the 3rd force)
F1 = 31cos15° = 30.0N (to the right)
F2 = -(23cos15) = -22.2N (to the right. Or +ve to the left)
a = (v - u)/t
Do I need to search for the vertical, y and the horizontal, x component of the velocity to turn it into resultant Force? Through square root of (Fy^2 +Fx^2)? I do not understand the first 2 sentences of the question. So in the end they will turn into the resultant force acted on the boat? I am confused.
It is a relatively new topic in mechanics to me. I am sorry I could not even make a single line of solution.. >< i have no idea where to start calculating actually. Though I did forces of equilibrium before, this doesn't seems like anything from it.
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