A tow truck pulls a car 4.85 km alonga horizontal roadway using a cable having a
ID: 1761584 • Letter: A
Question
A tow truck pulls a car 4.85 km alonga horizontal roadway using a cable having a tension of 820 N.(a) How much work does the cable do on the carif it pulls horizontally? ? J
How much work does the cable do on the car if it pulls at33.5° above the horizontal?
J
(b) How much work does the cable do on the tow truck if it pullsthe car horizontally?
J
How much work does the cable do on the tow truck if it pulls thecar at 33.5° above thehorizontal?
J
(c) How much work does gravity do on the car in part (a) if itspulled horizontally?
J
How much work does gravity do on the car in part (a) of its pulledat an angle of 33.5°?
J
(a) How much work does the cable do on the carif it pulls horizontally? ? J
How much work does the cable do on the car if it pulls at33.5° above the horizontal?
J
(b) How much work does the cable do on the tow truck if it pullsthe car horizontally?
J
How much work does the cable do on the tow truck if it pulls thecar at 33.5° above thehorizontal?
J
(c) How much work does gravity do on the car in part (a) if itspulled horizontally?
J
How much work does gravity do on the car in part (a) of its pulledat an angle of 33.5°?
J
Explanation / Answer
How much work does the cable do on the car if it pulls at33.5° above the horizontal?
W = F*s*cos(33.5) = 3.316*106 J
(b) How much work does the cable do on the tow truck if it pullsthe car horizontally?
W = F*s*cos(180) = -3.977*106 J
How much work does the cable do on the tow truck if it pulls thecar at 33.5° above thehorizontal?
W = F*s*cos(180 - 33.5) = -3.316*106 J
(c) How much work does gravity do on the car in part (a) if itspulled horizontally?
W = F*s*cos(90) = 0
How much work does gravity do on the car in part (a) of its pulledat an angle of 33.5°?
W = F*s*cos(90) = 0
Related Questions
Hire Me For All Your Tutoring Needs
Integrity-first tutoring: clear explanations, guidance, and feedback.
Drop an Email at
drjack9650@gmail.com
drjack9650@gmail.com
Navigate
Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.