Sand is being dropped from a stationary dropper at a rate of 0.5 kgs -1 on a conveyor belt moving with a velocity of 5 ms -1. The power needed to keep belt moving with the same velocity will be :

Question

Sand is being dropped from a stationary dropper at a rate of 0.5 kgs -1 on a conveyor belt moving with a velocity of 5 ms -1. The power needed to keep belt moving with the same velocity will be : (A) 1.25 W (B) 2.5 W (C) 6.25 W (D) 12.5 W

Tardigrade Admin · Accepted Answer

Thrust =λ V text rel =2.5 N Now, Power = F × V =12.5 W

Q. Sand is being dropped from a stationary dropper at a rate of $0.5 k g s^{- 1}$ on a conveyor belt moving with a velocity of $5 m s^{- 1}$ . The power needed to keep belt moving with the same velocity will be :

1.25 W

2.5 W

6.25 W

12.5 W

Thrust $= λ V_{rel}$
$= 2.5 N$
Now, Power $= F \times V = 12.5 W$

Q. Sand is being dropped from a stationary dropper at a rate of 0.5kgs−1 on a conveyor belt moving with a velocity of 5ms−1. The power needed to keep belt moving with the same velocity will be :