# A 200 kg wagon climbs up a hill of slope 30-degrees in 1 minute at a speed of 10 m/s. How much power is delivered by the engine? (Assume g = 10m/s^2)

Category: QuestionsA 200 kg wagon climbs up a hill of slope 30-degrees in 1 minute at a speed of 10 m/s. How much power is delivered by the engine? (Assume g = 10m/s^2)
Editor">Editor Staff asked 1 year ago

A 200 kg wagon climbs up a hill of slope 30-degrees in 1 minute at a speed of 10 m/s. How much power is delivered by the engine? (Assume g = 10m/s^2)

(a) 10 kW

(b) 20 kW

(c) 30 kW

(d) 40 kW

My doubt stems from Power topic in chapter Work, Energy and Power of Physics – Class 11
Select the correct answer from above options
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Editor">Editor Staff answered 1 year ago

The correct answer is (b) 20 kW

Easy explanation: Weight of car = m x g

= 2,00 x 10

= 2,000 N

Total force (F) = 2,000

Velocity (v) = 10 m/s

P = F x v

= 2000 x 10

= 20,000 W

= 20 kW.

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