Taian Wuyue Special Purpose Vehicle Co., Ltd. is a large-scale special purpose vehicle production base. A special purpose vehicle in this factory is in a straight line during the whole vehicle type te

Taian Wuyue Special Purpose Vehicle Co., Ltd. is a large-scale special purpose vehicle production base. A special purpose vehicle in this factory is in a straight line during the whole vehicle type test. (1) Because the special vehicle is driving at a constant speed, the traction force F=f=3.0× 103N.

Traction work w = fs = 3.0×103n× 5.6×103m =1.68×107j.

(2) Fuel mass consumed: m = ρ V = 0.8×103kg/m3×1.5×10-3m3 =1.2kg.

Heat generated by complete combustion of fuel: q = MQ =1.2kg× 4×107j/kg = 4.8×107j.

Heat engine efficiency η = WQ =1.68×107j4.8×107j = 35%.

Answer: (1) The work done by special vehicle traction is1.68×107j;

(2) The heat engine efficiency of this special vehicle is 35%.