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.
If I remember correctly, the answer is <span>Friction force.</span>
Answer:
I think it will option D hope it helps
the second statement is the correct one quarks are needed to balance charges in all subatomic particles such as neutrons, protons and electrons
