7. These questions are about the amount of work done by a force (a) Find the work done by a force F(x) = 1/x2 (force measured in Newtons) along the x-axis from r 10 (distance measured in meters) 1 to x (b) Find the work required to compress a spring from its natural length of 1ft to a length of 0.75ft if the force constant is k 16lb/ft (c) A spring has a natural length of 1m. A force of 24 N stretches the spring to 1.8m. i. Find the force constant k. ii. How much work will it take to stretch the spring 2m beyond its natural length? 8. Find the average value of the following functions on the given intervals. (a) f (x) 3x 0, (0, 3] (b) f(x) sin x on

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Chapter1: Functions And Models
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Find the work done for 7 (b)

7. These questions are about the amount of work done by
a force
(a) Find the work done by a force F(x)
=
1/x2 (force measured in Newtons)
along the x-axis from r
10 (distance measured in meters)
1 to x
(b) Find the work required to compress a spring from its natural length of 1ft
to a length of 0.75ft if the force constant is k
16lb/ft
(c) A spring has a natural length of 1m. A force of 24 N stretches the spring to
1.8m.
i. Find the force constant k.
ii. How much work will it take to stretch the spring 2m beyond its natural
length?
8. Find the average value of the following functions on the given intervals.
(a) f (x) 3x
0,
(0, 3]
(b) f(x) sin x on
Transcribed Image Text:7. These questions are about the amount of work done by a force (a) Find the work done by a force F(x) = 1/x2 (force measured in Newtons) along the x-axis from r 10 (distance measured in meters) 1 to x (b) Find the work required to compress a spring from its natural length of 1ft to a length of 0.75ft if the force constant is k 16lb/ft (c) A spring has a natural length of 1m. A force of 24 N stretches the spring to 1.8m. i. Find the force constant k. ii. How much work will it take to stretch the spring 2m beyond its natural length? 8. Find the average value of the following functions on the given intervals. (a) f (x) 3x 0, (0, 3] (b) f(x) sin x on
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