Concept explainers
(a)
To Find: Themechanical advantage of lever.
(a)
Answer to Problem 42PPS
Explanation of Solution
Given: The mechanical advantage of a lever is
From the figure given
Then
Hence, the mechanical advantage of the lever is
(b)
To Find: If the Egyptian worker can apply a force of
(b)
Answer to Problem 42PPS
Explanation of Solution
Given: The force placed on the rock is the product of the mechanical advantage and the force applied to the end of the lever.
Mechanical advantage of the lever is
And
Egyptian worker can apply a force of
Then
Greatest weight =
Hence, the greatest weight is
(c)
To Find: The force.
(c)
Answer to Problem 42PPS
Explanation of Solution
Given: To lift a
Then
Then
Force=
Hence,
Chapter 11 Solutions
Algebra 1
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