ICSE Class 9 Answered
physics
Asked by dlakshmisrinivas | 07 Aug, 2021, 09:46: AM
Expert Answer
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, 01:02: PM
ICSE 9 - Physics
Asked by krashish57 | 14 Sep, 2023, 11:05: AM
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