Concept explainers
(a)
The required horsepower.
(a)
Answer to Problem 72GP
Explanation of Solution
Given:
Average frictional force,
Average speed,
Current rating in one hour,
Voltage supply to each battery,
Number of batteries,
Mass of Car,
Formula used:
The relationship between power, force and velocity is given by:
Where,
v is velocityCalculation:
Substitute all the given values in the formula:
Conclusion: The required horsepower is
(b)
The distance in kilometres after which the batteries must be recharged.
(b)
Answer to Problem 72GP
Explanation of Solution
Given:
Average frictional force,
Average speed,
Current rating in one hour,
Voltage supply to each battery,
Number of batteries,
Mass of Car,
Formula used:
Formula used to calculate distance:
Where,
Calculation:
It is known that,
Now, here
Substitute all the given values in the formula:
Conclusion: The required distance is
Chapter 18 Solutions
Physics: Principles with Applications
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