Question

An elevator can accommodate a maximum of 10 people. If the elevator can carry maximum 980kg weight, what is the maximum possible average weight of each person?​

Answer 1

Step-by-step explanation:

Mass of elevator, m

e

=980

kg

speed, u=3m/s.

friction, f=6000N.

Mass of men, m

0

=10×68

=680kg

Force applied by motor =T.

Ref. image

∑F

y

=ma

y

⇒T−f−(m

e

+m

0

)g=ma

y

(speed is constant ⇒a

y

=0)

⇒T=f+(m

e

+m

0

)g

=6000+(920+680)×10

=6000+(1600)×10

=22,000

Power=Force×speed

=22,000×3=66,000W