Answer:
C
Explanation:
the formula is a + b = ab
<h3>Answer:</h3>
The mechanical advantage would decrease, making the block more difficult to lift.
<h3>Explanation:</h3>
The mechanical advantage in such a setup is the ratio of distance from A to B to the distance from D to B. In this picture, that ratio is less than 1, meaning the advantage of having this setup is less than the advantage of no setup at all.
While the force required to lift the block is increased by this setup, the distance over which that force is applied will be smaller for raising the block to a given height. (Overall, for the same height, more work is required with the lever setup because you're raising part of the mass of the lever as well as the mass of the block.)
Assuming you want it to be as small and lightweight as possible :
Cut a solid box roughly twice as big as the pringle. Put the pringle inside the box, and fill the remaining space with cotton, that will cushion the impacts. Be sure to apply the mention <em>FRAGILE</em> to the box, so that they'll take care of it properly.
Answer:
0.125m
Explanation:
Given that:
Length of spring = 100m
Extension, e = 0.250
Recall :
F = ke - - - - (1)
Therefore, if spring is cut into 2 halves :
Then,
k = k1 + K2 ; since k1 and K2 are of equal length
Extension = e'
k = 2k
F = ke'
Then,
F = 2ke' - - - - - (2)
Equate (1) and (2)
ke = 2ke'
e = e'
0.250 = 2e'
0.250 / 2 = e'
e' = 0.125m