Concept explainers
a.)
To find: The acceleration of elevator.
a.)
Answer to Problem 71GP
Explanation of Solution
Given Data:
Formula Used:
Calculation:
Here
force between the surface and the object and
The frictional force acting on the object is
Apply equilibrium condition of forces for the given situation.
Rearrange above equation for acceleration
For each 4.0m horizontal distance covered by the car, the elevation in the hill is1.0m. Therefore, the angle made by the surface with the horizontal is
(a) The velocity of the car when the surface is frictionless can be calculated as follows.
Substitute 0 for
Therefore, the speed of the car when the surface is frictionless is
Conclusion:
b.)
To find: The acceleration of elevator.
b.)
Answer to Problem 71GP
Explanation of Solution
Given Data:
Formula Used:
Calculation:
Here
force between the surface and the object and
The frictional force acting on the object is
Apply equilibrium condition of forces for the given situation.
Rearrange above equation for acceleration
For each 4.0m horizontal distance covered by the car, the elevation in the hill is1.0m. Therefore, the angle made by the surface with the horizontal is
The velocity of the car when the surface is frictionless can be calculated as follows.
Substitute 0 for, for
Therefore, the speed of the car when the surface is frictionless is
Conclusion:
Chapter 4 Solutions
Physics: Principles with Applications
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