Answer:
C
Step-by-step explanation:
(22/8+3)+(15/8-3)=5, (55/8+3)+(40/8-3)=13
(22/11)+(15/5)=5, (55/11)+(40/5)=13
2+3=5, 5+8=13
It's basically either guess and check, or you can use system of equations (but that would take way more time)
Answe
Step-by-step explanation:
Answer:
W1 = W2 = 50k Joules (assuming W1 and W2 have the same force constant, k)
W1 - W2 = 0
Step-by-step explanation:
Work done in stretching a spring is given by 1/2ke^2
Where, k is force constant and e is extension
e1 = 30cm - 20cm = 10cm
W1 = 1/2k(e1)^2 = 1/2×k×10^2 = 50k Joules
e2 = 40cm - 30cm = 10cm
W2 = 1/2k(e2)^2 = 1/2×k×10^2 = 50k Joules
W1 = W2 = 50k Joules provided W1 and W2 have equal force constant
Therefore, W1 - W2 = 0
