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26 Nov 2019
Jane, whose mass is 50.0 kg, needs to swing across ariverfilled with crocodiles (and velociraptors) in order torescueTarzan, whose mass is 90.0 kg. However, she must swing intoaconstant horizontal wind force F on a vine that is initially atanangle of Î with the vertical. See Figure P5.61. Inthe figure,D=50.0 m, F = 150 N, L = 40.0 m, and Î = 50.0degrees.
a) With what minimum speed must Jane begin her swing in ordertojust make it to the other side? (Hint: Firstdetermine the potentialenergy that can be associated with the windforce. Because the windforce is constant, use an analogywith the constant gravitationalforce.) b)When the rescue in the previous problem is complete,Tarzanand Jane must swing back across the river. With whatminimumspeed must they begin their swing?
Jane, whose mass is 50.0 kg, needs to swing across ariverfilled with crocodiles (and velociraptors) in order torescueTarzan, whose mass is 90.0 kg. However, she must swing intoaconstant horizontal wind force F on a vine that is initially atanangle of Î with the vertical. See Figure P5.61. Inthe figure,D=50.0 m, F = 150 N, L = 40.0 m, and Î = 50.0degrees.
a) With what minimum speed must Jane begin her swing in ordertojust make it to the other side? (Hint: Firstdetermine the potentialenergy that can be associated with the windforce. Because the windforce is constant, use an analogywith the constant gravitationalforce.)
a) With what minimum speed must Jane begin her swing in ordertojust make it to the other side? (Hint: Firstdetermine the potentialenergy that can be associated with the windforce. Because the windforce is constant, use an analogywith the constant gravitationalforce.)
b)When the rescue in the previous problem is complete,Tarzanand Jane must swing back across the river. With whatminimumspeed must they begin their swing?
