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Homework 8

# Homework 8 - lim(kl9356 Homework 8 Weathers(17104 This...

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lim (kl9356) – Homework 8 – Weathers – (17104) 1 This print-out should have 11 questions. Multiple-choice questions may continue on the next column or page – find all choices before answering. 001 (part 1 of 2) 10.0 points A force vector F = F x ˆ ı + F y ˆ acts on a particle that undergoes a displacement of vectors = s x ˆ ı + s y ˆ . Let: F x = 9 N, F y = - 5 N, s x = 6 m, and s y = 2 m. Find the work done by the force on the particle. Answer in units of J. 002 (part 2 of 2) 10.0 points Find the angle between vector F and vectors . Answer in units of . 003 10.0 points A shopper in a supermarket pushes a cart with a force of 35 . 6 N directed at an angle of 23 . 4 downward from the horizontal. Find the work done by the shopper as she moves down a 51 . 6 m length of aisle. Answer in units of kJ. 004 10.0 points Hint: W = vector S · vector F . Consider a force vector F with components F x = 31 N, F y = 40 N, and F z = 73 N, as illustrated in the figure below.

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