Question 1 Only two forces act on an object (mass = 3.70 kg), as in the drawing.

Question

Question 1

Only two forces act on an object (mass = 3.70 kg), as in the drawing. (F = 61.0 N.) Find the magnitude and direction (relative to the x axis) of the acceleration of the object.

Question 2

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.)

(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.)

Explanation / Answer

1.in x direction
net force=Fcos45+ 40=61/20.5 +40 =83.13N
F=ma
or, a=F/m=83.13/3.7=22.467m/s2

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