Mathematics, 08.02.2021 18:50 edjiejwi
A chain lying on the ground is 10 m long and its mass is 60 kg. How much work (in J) is required to raise one end of the chain to a height of 4 m?
Answers: 3
, assuming that 
.
is constant, moving by 
in the direction of the force would do a work of 
.
denote the force required to lift the chain when the height above the ground is 
meters. At that moment, exactly 
of the chain would be above the ground. The mass of that much of the chain would be 
the mass of the whole chain.
.![\begin{aligned}\int \limits_{0}^{4} F(x) \cdot {\rm d} x &= \int \limits_{0}^{4} 6\, g\, x \cdot {\rm d} x \\ &= \left[(3\, g)\, x^{2}\right]_{x=0}^{x=4}\\ &= 48\, g \approx 4.7 \times 10^{2} \end{aligned}](/tpl/images/1101/4229/12399.png)
.
of energy to raise one end of the chain to that height of 
.
Another question on Mathematics
Mathematics, 21.06.2019 18:00
Li buys supplies so he can make and sell key chains. he begins to make a profit only after he sells 4 key chains. what point on the graph makes the most sense in this situation?
Answers: 2
Mathematics, 21.06.2019 22:00
5. (03.02)if g(x) = x2 + 3, find g(4). (2 points)1619811
Answers: 1
Mathematics, 21.06.2019 23:30
Graham’s monthly bank statement showed the following deposits and withdrawals. -$25.20, $42.75, -$22.04, -$18.50, $74.11. part a if grahams baldness in the account was $37.86 at the beginning of the month,! 27/4! 2// the account balance at the end of the month? ? plz i will give you 100 points
Answers: 1
Mathematics, 22.06.2019 00:00
Iwill arward ! , i if bt ≅ eu , bu ≅ et , prove: ∠b ≅ ∠e. fill in the blanks: draw segment ut ≅ bt≅ bu ≅ △ubt ≅ △
Answers: 1
You know the right answer?
A chain lying on the ground is 10 m long and its mass is 60 kg. How much work (in J) is required to...
Questions
English, 26.08.2019 16:50
Mathematics, 26.08.2019 16:50
English, 26.08.2019 16:50
Mathematics, 26.08.2019 16:50
Health, 26.08.2019 17:00
Mathematics, 26.08.2019 17:00
English, 26.08.2019 17:00
Biology, 26.08.2019 17:00
