Question

If only 10 pounds is required to lift a 500-lb block, how much chain must be played out to lift the engine 3.0 inches?

0.060 in

150 in

290 in

6.0 in

need help on more asap

Answer 1

150 in"

Step-by-step explanation:

Answer 2

150 inches (12.5 ft)

Step-by-step explanation:

The work done to lift the 500 pound block 3 inches should be the same as that to lift the 10 pond object a given distance.

The following is the equation one needs to solve:

`10 \,lb\,* \,x\,=\,500\,lb\,*\,3\,in\\10 \,lb\,* \,x\,=\,1500\,lb\,in\\`

therefore solving for the distance "x" gives as the answer (in inches):

`10 \,lb\,* \,x\,=\,1500\,lb\,in\\x\,=\,(1500\,lb\,in)/(10\,lb) \\\\x\,=150\,in`

which can also be given in feet as: 12.5 ft