Respuesta :

astonishinglycool

Answer:

50,000 joules

Step-by-step explanation:

total mass of people = 50× 5 = 250kg

height = 20m

force = mass × g = 250× 10 ( taking g= 10m/s²)

f= 2500N

work done = force × distance

= 2500× 20

= 50000 joules