Question

If f=7-2x+3x*x and the displacement x=0 to x=5 find the work

Answer 1

Explanation:

we know

work =integration of from initial to final displacement

so,

integration of 7-2x+3x²

is 7x-x²+x³

now taking the limits,

the value of function at upper limit

7*5-5²+5³=65

the value of function at lower limit

7*0-0²+0³=0

so,work done is 65-0=65 j