(II) The two trees in Fig. 9–51 are 6.6 m apart. A back- packer is trying to lift his pack out of the reach of bears. Calculate the magnitude of the force F that he must exert downward to hold a 19-kg backpack so that the rope sags at its midpoint by (a) 1.5 m, (b) 0.15 m. FIGURE 9–51 Problems 8 and 70.

(II) The two trees in Fig. 9–51 are 6.6 m apart. A back- packer is trying to lift his pack out of the reach of bears. Calculate the magnitude of the force F that he must exert downward to hold a 19-kg backpack so that the rope sags at its midpoint by (a) 1.5 m, (b) 0.15 m. FIGURE 9–51 Problems 8 and 70.

College Physics

1st Edition

ISBN:9781938168000

Author:Paul Peter Urone, Roger Hinrichs

Publisher:Paul Peter Urone, Roger Hinrichs

Chapter5: Further Applications Of Newton's Laws: Friction, Drag, And Elasticity

Section: Chapter Questions

Problem 19PE: Repeat Exercise 5.18 with the contestant pulling the block of ice with a rope over his shoulder at...

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Question

(II) The two trees in Fig. 9–51 are 6.6 m apart. A back-
packer is trying to lift his pack out of the reach of bears.
Calculate the magnitude of the force F that he must exert
downward to hold a 19-kg backpack so that the rope sags
at its midpoint by (a) 1.5 m, (b) 0.15 m.
FIGURE 9–51
Problems 8 and 70.

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