Answer:
T = 4517.48 N
Explanation:
It is given that,
Average power of the motor,
Speed of the boat,
Force or tension acting on the motor at this point is given by :
T = 1916.08 N
Average power generated by the engine,
Force or tension acting on the motor at this point is given by :
T = 6433.56 N
So, the tension in the tow rope that is pulling the skier is, T = 6433.56 N - 1916.08 N = 4517.48 N
Answer:
3. Her angular speed increases because her angular momentum is the same but her moment of inertia decreases
Explanation:
II ωi the intial angular momentum of the skater. Her angular momentum changes to If ωf after pulling her arms in.
It must be noted that If is less than II, then it is because her arms now go round not far from the rotation axis which brings down the mementos of inertia.
Angular momentum does not change since torque is O.
Note: the mathematical representations are better written on the attached diagram.
