Question

plz do this question​

Answer 1

$\huge\mathfrak\red{Answer}$

THIS QUESTION INCLUDES THE BASICS OF WORK, POWER, ENERGY.

FOR SOLVE THIS QUESTION YOU NEED TO KNOW ABOUT SOME BASICS OF WORK, POWER, ENERGY.

WHAT IS WORK?

IN PHYSICS WORK IS NOTHING BUT THE PRODUCT OF FORCE WITH DISPLACEMENT BUT THING YOU NEED TO REMEMBER IS THAT BOTH FORCE AND DISPLACEMENT HAS TO BE IN SAME DIRECTION.

WHAT IS POWER?

THE RATE OF DOING WORK OR GENERATING ENERGY TO DO WORK IS KNOWN AS POWER.

$velocity = 10m {sec}^{ - 1} \\ displacement \: in \: 1 \: second = velocity \times 1sec \\ \\ displacement = 10m \\ \\ work \: done \: in \: one \: sec = force \times displacement \\ work \: done \: in \: one \: sec = 10 \times force \\ \\ power \: generated \: in \: 1sec = 4kj \\ power \: in \: one \: sec = \frac{work}{1 \: sec} \\ \\ 4 \times {10}^{3} = 10force \\ \frac{4000}{10} = force \\ force = 400newton$