Answer:
2,400 foot-pounds
Step-by-step explanation:
Say at any instant x is length of Rope
Work done in lifting rope by dx amount will be:
dw = -(2.5x + 10)dx
w = -(40)∫(2.5x+10)dx
w = (2.5(40)^2) / 2 + 10(40)
w = 2000 + 400
w = 2,400 foot-pounds
Answer:
136
Step-by-step explanation:
180 - <BAC
Answer:
this question does not make sense
Answer:
Step 1: 4
Step 2: 4 and 1
Step 3: 2x² + 4x + x + 2
Step 4: (2x² + 4x) + (x + 2)
Step 5: 2x(x + 2) + 1(x + 2)
Step 6: (x + 2)(2x + 1)
Step-by-step explanation: