Recitation_04

# Recitation_04 - Recitation 4 1/10 Question 1 v A box is...

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Recitation 4 1/10 Phys 218 A box is being pulled so that it moves at a constant velocity in the direction shown. The correct free body diagram is shown for the box. Which of the following answers gives the correct equations? T gravity F N Question 1 v x y f F A) 0 : : y g y x f x a m F N F a m F T F B) 0 : : y g y x f x a m F T F a m F N F C) y f y x g x a m F T F a m F N F : 0 : D) 0 : 0 : y g y x f x a m F N F a m F T F

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Recitation 4 2/10 Phys 218 Example 1 Three forces are acting on an object as shown. The second force has a magnitude of 30 N and θ 2 = 75°. The third force has a magnitude of 45 N and θ 3 = 10°. What is the magnitude and direction of the first force so that the object is in equilibrium? F 1 = __________ θ 1 = __________ 42.3 N 30° x y 1 F 2 F 3 F 1 2 3
Recitation 4 3/10 Phys 218 Example 2 A sign of mass 10 kg is hanging between two adjacent buildings. Three ropes are used to hang the sign. If θ

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## This note was uploaded on 12/07/2011 for the course PHYS 218 taught by Professor A during the Fall '08 term at Purdue University-West Lafayette.

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Recitation_04 - Recitation 4 1/10 Question 1 v A box is...

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