At an airport, luggage is unloaded from a plane into the three cars of a luggage

Question

At an airport, luggage is unloaded from a plane into the three cars of a luggage carrier, as the drawing shows. The acceleration of the carrier is 0.18 m /s2, and friction is negligible. The coupling bars have negligible mass.

(a) By how much would the tension in each of the coupling bars A, B, and C change if 24 kg of luggage were removed from car 3 and placed in car 2? If the tension changes, specify whether it increases or decreases. (Specify a decrease in tension with a negative value and an increase in tension with a positive value. If there is no change, enter 0.)

I know ?TA AND ?TB is 0

Please solve for ?TC

(b) By how much would the tension in each of the coupling bars A, B, and C change if 24 kg of luggage were removed from car 2 and placed in car 1? If the tension changes, specify whether it increases or decreases. (Specify a decrease in tension with a negative value and an increase in tension with a positive value. If there is no change, enter 0.)

I know ?TA AND ?TC is 0

Please solve for ?TB

Explanation / Answer

change in tension in C = -( 24 * 0.18) = - 4.32N

B)

change in tension in B = -( 24* 0.18) = -4.32N

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