A woman at an airport is towing her 200-kg suitcase at, Ask an Expert

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A woman at an airport is towing her 20.0-kg suitcase at constant speed by pulling on a strap at an angle Î¸ above the horizontal. She pulls on the strap with a 35.0-N force. This friction force on the suitcase is 20.0 N.

(a) What angle does the strap make with the horizontal?

(b) What normal force does the ground exert on the suitcase?

(d) How much mechanical work does the woman do on the suitcase on her way across the terminal which is 200m long?

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