Concept explainers
(a)
To Find: The maximum weight of a person.
(a)
Answer to Problem 68GP
The maximum weight of a person who can walk to the point D without tipping the beam is
Explanation of Solution
Given:
Length of the beam,
Weight of beam,
Formula used:
The maximum weight of a person who can walk to the point D without tipping the beam is calculate by applying torque at point B
Here,
Calculation:
Substitute the given values in the above equation:
Conclusion:
Thus, the maximum weight of a person who can walk to the point D without tipping the beam is
(b)
To Find: The forces exerted by wall A and B on beam.
(b)
Answer to Problem 68GP
The forces that the walls A and B exert on the beam when the person is standing at point D is
Explanation of Solution
Given:
Length of the beam,
Weight of beam,
Formula used:
At point D, taking the equilibrium condition in vertical direction
Here,
Calculation:
Substitute the given values in the above equation
Conclusion:
Thus, the forces that the walls A and B exert on the beam when the person is standing at point D is
(c)
To Find: The forces exerted by wall A and B on beam.
(c)
Answer to Problem 68GP
The forces that the walls A and B exert on the beam when the person is standing at a point 2 m to the right of B is
Explanation of Solution
Given:
Length of the beam,
Weight of beam,
Formula used:
Applying the torque at a point
Here,
Calculation:
Substitute the given values in the above equation,
Conclusion:
Thus, the forces that the walls A and B exert on the beam when the person is standing at a point
(d)
To Find: The forces exerted by wall A and B on beam.
(d)
Answer to Problem 68GP
The forces that the walls A and B exert on the beam when the person is standing at a point
Explanation of Solution
Given:
Length of the beam
Weight of beam
Formula used:
Applying the torque at a point
Substitute the given values in the above equation,
Conclusion:
Thus, the forces that the walls A and B exert on the beam when the person is standing at a point
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Physics: Principles with Applications
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