CAPA 2 - gaitons Set 2, Due Tue, Jan 29, 2008 at 23:59 1....

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gaitons Set 2, Due Tue, Jan 29, 2008 at 23:59 1. 1 . [1 point, 10 tries] Two rubber bands pulling on an object cause the object to accelerate at 3.50 m/s 2 . What will be the object's acceleration if it is pulled by 4 rubber bands? Answer: 7.00e+00 m/s^2 2. 2 . [1 point, 10 tries] The three ropes shown are tied to a small, very light ring that is stationary. Two of these ropes are anchored to walls at right angles with the tensions shown in the figure. What is the magnitude of the tension T 3 in the third rope, if T 1 = 34.3 N, T 2 = 89.2 N, and the lengths of rope 1 and 2 are 2.75 m and 0.190 m, respectively? Answer: 9.56e+01 N 3. 3 . [1 point, 10 tries] The tensions of the ropes acting on a 4.40 kg object are shown. Find the value of a x , the x -component of the acceleration, if T 1 =1.20 N, T 2 =1.00 N, T 3 =4.90 N, T 4 =4.30 N, and θ=19.0°? Answer: 5.38e-01 m/s^2 -5.38e-01 m/s^2 4. 4 . [1 point, 10 tries] A 61.3 kg box hangs from a rope. What is the tension in the rope if the box is at rest? Answer: 6.01e+02 N
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5. 5 . [1 point, 10 tries] A stubborn, 162.0 kg mule sits down and refuses to move. To drag the mule to the barn, the exasperated farmer ties a rope around the mule and pulls with his maximum force of 833.0 N. The coefficients of friction between the mule and the ground are μ s =0.760 and μ k =0.260. What is the net force on the mule? Answer: 0.0 N 6. 6 . [1 point, 10 tries] A 7.10 kg object initially at rest at the origin is subjected to the time-varying force shown below. What is the object's velocity at t total =39.0 s if the maximum force applied in the x -component, F x , is 54.0 N? Answer:
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This note was uploaded on 07/23/2008 for the course SCIENCE PHYSICS 1B taught by Professor Hughes during the Winter '08 term at McMaster University.

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CAPA 2 - gaitons Set 2, Due Tue, Jan 29, 2008 at 23:59 1....

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