Question

A light elastic cord of length l₀ = 5 m and stiffness K = 50 N/m is inside a fixed box with small portion of length x₀ = 20 cm left out of a hole on a wall of the box as shown, If The cord is pulled out of the box, a frictional force F = 25 N acts on the cord. How much work has to be done in slowly pulling out the entire length of the cord?

Answer 1

Answer:

50+20+20=90 I think so.

Answer 2

Explanation:

It means that tan x will be defined for all values except the values that will make cos x = 0, because a fraction with denominator 0 is not defined. Hence, for these values, tan x is not defined. So, the domain of f(x) = tan x will be R – ( 2 n + 1 ) π 2. and the range will be set of all real numbers, R.