it represents a physical change. it is not a chemical change because its chemical formula does not change unless combustion is involved.
Matter is every object that stands on this Earth
The formula of mechanical advantage in this situation is:
MA = Input Force ÷ Output Force
The input force is the 30N applied to a screwdriver while the output force is the 75N force to the lid.
So,
MA = 30N/75N
MA = 0.40
Hence the mechanical advantage of the screwdriver is 0.40.
Answer:
Check the image file attached
Explanation:
