Question

☆ A 1200-kg car is being towed up an 18° incline by means of a rope attached to the rear of a truck. The rope makes an angle of 27° with the incline. What is the greatest distance that the car can be towed in the first 7.5 s starting from rest if the rope has a breaking strength of 4.6 kN? Ignore all resistive forces on the car.

(A) 8.94 m

(B) 87.4 m

(C) 10.9 m

(B) 1.45 m

☆ (The second part to this question is)..:

A worker pushed a 26.6 kg block a distance of 9.54 m along a level floor at constant speed with a force directed 32 degrees below the horizontal. The coefficient of kinetic friction is 0.21. How much work did the worker do on the block?

(A) 601.1 J

(B) 694.1 J

(C) 1259. J

(D) 1826. J

Answer 1

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