A car travelling at 30m/s overcomes a frictional resistance of 100N while moving. Calculate the power developed by the engine.[1hp=0.75]
power=force*distance/time= 100*30=3000Watts
3000watts*1hp/746watts= 4hp
the .[1hp=0.75] note you have is useless, no units. It is as silly as stating 1year=365 or 1cup=16.
I don't know the answer
To calculate the power developed by the engine, we can use the formula:
Power = Force * Velocity
Given:
Velocity (V) = 30 m/s
Frictional Resistance (F) = 100 N
Let's plug in the values into the formula and convert the units accordingly:
Power = Force * Velocity
= 100 N * 30 m/s
Now we can calculate the power in watts:
Power = 100 N * 30 m/s
= 3000 N·m/s
Since 1 watt (W) is equal to 1 N·m/s, the power in watts is:
Power = 3000 W
To convert the power to horsepower, we can use the conversion factor:
1 hp = 0.75 kW
So, 3000 W is equal to:
3000 W * (1 hp / 0.75 kW) = 4000 hp
Therefore, the power developed by the engine is 4000 horsepower (hp).
To calculate the power developed by the engine, we need to use the formula:
Power = Force × Velocity
Given that the car overcomes a frictional resistance of 100N and travels at a velocity of 30 m/s, we can substitute these values into the formula to find the power.
Power = 100N × 30 m/s
Now, let's calculate the power:
Power = 3000 N·m/s
However, we need to convert the unit of power from N·m/s to horsepower (hp) as requested in the question.
Given 1 hp = 0.75 N·m/s, we can calculate the power in horsepower:
Power = 3000 N·m/s * (1 hp / 0.75 N·m/s)
Power = 4000 hp
Therefore, the power developed by the engine is 4000 horsepower.