Question

Sand drops vertically at a rate of 3 kg sl onto a conveyor belt moving at a constant speed v = 2 m s1. The kinetic energy gained by sand per unit time is​

Answer 1

Answer:

Correct option is

C

0.04 W

v=0.2m/s

⇒ Force =

dt

d

(mv)

dt

dm

=2kg/s

=v

dt

dm

v= constant

=0.2×2

=0.4N.

Hence, the answer is 0.4N.