A car of mass 1500 kg is pulling a trailer of mass 750 kg up a straight hill of length 800 m inclined atan angle of sin-0.08 to the horizontal. The resistances to the motion of the car and trailer are 400 Nand 200 N respectively. The car and trailer are connected by a light rigid tow-bar. The car and trailerhave speed 30 ms- at the bottom of the hill and 20ms- at the top of the hill.After reaching the top of the hill the system consisting of the car and trailer travels along a straightlevel road. The driving force of the car's engine is 2400 N and the resistances to motion are unchanged.Find the acceleration of the system and the tension in the tow-bar.

Given that a car of mass mc=1500 kg is pulling a trailer of mass mt=750 kg up a straight hill of…

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