+ -11.5 points SerCP7 4P040. A woman at an airport is towing her 15.0 kg suitcas

Question

+ -11.5 points SerCP7 4P040. A woman at an airport is towing her 15.0 kg suitcase at constant speed by pulling on the strap at an angle above the horizontal (Fig. P4.40). She pulls on the strap with a 24.0 N force, and the friction force on the suitcase is 12.0 N. Draw a free-body diagram of the suitcase. (Do this on paper. Your instructor may ask you to turn in this work.) My Notes Ask Your Teacher This answer has not been graded yet Figure P4.40 (a) What angle does the strap make with the horizontal? (b) What normal force does the ground exert on the suitcase? Show My Work (optional)

Explanation / Answer

Since velocity is constant, a= 0; and horizontal force she is pulling with = frictional foces
F cos = 12 N
(24) cos = 20.0
= 33.5*

Magnitude of normal force:
N = (15 kg)(9.8 m/s^2) - F sin
N = (15)(9.8) - (24)(sin 33.5)
Normal Force N = 133.75 N

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