Question

A fish has been hooked and is pulling on the line as shown in the figure below.

If the pole makes an angle of 25° with the horizontal, the distance between the point where the line is attached to the pole and the anglers hand is

L = 2.05 m,

and the fish pulls on the line such that the tension in the line is

T = 118 N

at an angle 35.0° below the horizontal, determine the magnitude (in N · m) of the torque exerted by the fish about an axis perpendicular to the page and passing through the angler's hand.

N · m

Answer 1

given

pole makes an angle of 25° with the horizontal

L = 2.05 m

T = 118 N

at an angle 35.0° below the horizontal

the angle perpendicular angle is = 90 - 25 - 35

= 90 - 60

= 30^o

the magnitude of the torque exerted by the fish is = T cos x L

= 118 x cos30 x 2.05

= 209.491 N-m

so the magnitude of the torque exerted by the fish is = 209.491 N-m