A 29.9 kg mass attached to a spring scale rests on a smooth, horizontal surface. The spring scale, attached to the front end of a boxcar, reads T = 44.8 N when the car is in motion. m If the spring scale reads zero when the car is at rest, determine the acceleration of the car, when it is in motion as indicated above. Answer in units of m/s 2 .
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T = Force of Spring Reaction to forward acceleration
= 44.8
Mass= 29.9
Acceleration = Reaction Tension/ Mass =;44.8 /29.9
a= 1.49 M sec^-2 Approx
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