Arock with a mass of 1000 kg falls to the earth. what would the force be?

Since the pully is a simple machine so the mechanical advantage is a 1

Answerthe energy required is 1.60 × 10⁻¹⁸ j, to three significant figures.explanationwe define electric potential as the ratio electric potential energy to the charge,    then the following gives us the potential difference,      the formula  may be on your formula sheet.the change in electric potential energy would be the energy that would needed to move it from point a to point b. solving for that, we get    using q = 8.00  × 10⁻¹⁹ c and  δv = 2.00 v, we get    the energy required is 1.60 × 10⁻¹⁸ j, to three significant figures.

B. conditioned response

This is asking what you have learned in your studies i haven't read studies and i'm not able to read your mind..