(a)
The power must the engine deliver to drive the car on a level road at
(a)
Answer to Problem 95P
The power must the engine deliver to drive the car on a level road at
Explanation of Solution
Take
Write the expression for the net force along
Here
Rearrange the above equation to get
Write the expression for rate at which air resistance dissipates energy.
Here,
The
Conclusion:
Substitute
The car has to give power equivalent to
Therefore, write the expression for the power the engine must deliver to drive the car on level ground.
Substitute
Therefore, the power must the engine deliver to drive the car on a level road at
(b)
The steepest hill the car can climb at
(b)
Answer to Problem 95P
The car can climb at
Explanation of Solution
Write the expression power available to climb the hill.
Here,
Write the expression for the power delivered by the engine.
Conclusion:
Substitute
Substitute
Therefore, the car can climb at
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Chapter 6 Solutions
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