The drive shaft of an automobile rotates at 3600 rpm and transmits 80 HP

The Drive Shaft Of An Automobile Rotates At 3600 Rpm Physics QuestionThe Drive Shaft Of An Automobile Rotates At 3600 Rpm Physics Question

The drive shaft of an automobile rotates at 3600 rpm and transmits 80 HP up from the engine to the rear wheels.The torque developed by the engine is

Options

(a) 16.58 Nm
(b) 0.022 Nm
(c) 158.31 Nm
(d) 141.6 Nm

Correct Answer:

158.31 Nm

Explanation:

P = τω ⇒ τ = P/ω Given:- P = 80 HP = 80 x 746W = 59860 Nms⁻¹ ω = 3600 rpm = (3600/60) x 2π rad s⁻¹ = 120 π rad s⁻¹ τ = 59680/(120xπ) =158.31 Nm

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