ICSE Class 9 Answered
physics
![question image](http://images.topperlearning.com/topper/new-ate/top_mob16283098191513040259b76a9ff1-bf24-4b5d-a218-7ebe066611b4.jpg)
Asked by dlakshmisrinivas | 07 Aug, 2021, 09:46: AM
Q.39 A train has a constant speed of 40 m/s on a level road against resistive force of magnitude 3×104 N. Find the power of the engine.
When the speed is constant there is zero acceleration.
Thus,
F = R
Here,
Thus,
P = Fv
P = 3 x 104 x 40
= 1.2 x 106 W
Thus, power of engine is 1.2 x 106 W
Answered by Shiwani Sawant | 11 Aug, 2021, 13:02: PM
ICSE 9 - Physics
Asked by krashish57 | 14 Sep, 2023, 11:05: AM