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DQuestion 7 10 pts For the trailer hitch shown in the figure below, determine the horizontal force that will result on the ball from accelerating a 2000-kg trailer to 60 m/sec in 20 sec. (answer in kN) BALL BACKET SALL Given: Mass of trailer Mtrailer- 2000kg Final velocity v 60 m/s Time to reach velocity T-20 s Assumptions: 1. Acceleration is constant. 2. The rolling resistance of the tires and the wheel bearings is negligible.
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Answer #1

Force on ball = mass of trailer x rate of change of velocity with time

= 2000 x (60-0)/20

= 2000x3

= 6 KN

Hence horizontal force on ball = 6 KN

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