A fisherman is fishing from a bridge and is using a "45-n test line." in other words, the line will sustain a maximum force of 45 n without breaking. what is the weight of the heaviest fish that can be pulled up vertically when the line is reeled in (a) at a constant speed and (b) with an acceleration whose magnitude is 2.0 m/s2. (hint: find the mass of the fish first and then the weight.)
Answer:
By F(net) = F(applied) - F(gravity)
=>ma = T - mg
=>T = ma + mg
1) T = mg [as v = constant=>a=0]
=>45 = m x 9.8
=>m = 4.59 kg
2) by T = ma + mg
=>45 = m(2 + 9.8)
=>m = 3.81 kg
