A motor pulls a 255 kg cart filled with crushed stone up rail bars inclined at 30 degrees at a uniform speed of 200 cm/s. The kinetic friction coefficient between the cart and the rail bars is 0.25. Determine the power output of the motor.

• A. 4.95 kW
• B. 505 W
• C. 3.58 kW
• D. 365 W

Answer: (C)