Diwali rocket is ejecting 50 g of gasses at a velocity of 400 m/s . The accelerating force on the rocket will be

Question

Diwali rocket is ejecting 50 g of gasses at a velocity of 400 m/s . The accelerating force on the rocket will be (A) 22 dyne (B) 20 N (C) 20 dyne (D) 100 N

Tardigrade Admin · Accepted Answer

The accelerating force on the rocket upward thrust =(Δ m/Δ t) ⋅ u Given, (Δ m/Δ t)=50 × 10-3 kg / s , v=400 m / s So, accelerating force =50 × 10-3 × 400 =20 N

Q. Diwali rocket is ejecting $50 g$ of gasses at a velocity of $400 m / s$ . The accelerating force on the rocket will be

22 dyne

20 N

20 dyne

100 N

The accelerating force on the rocket
upward thrust $= \frac{Δ m}{Δ t} \cdot u$
Given, $\frac{Δ m}{Δ t} = 50 \times 1 0^{- 3} k g / s, v = 400 m / s$
So, accelerating force $= 50 \times 1 0^{- 3} \times 400$
$= 20 N$

Q. Diwali rocket is ejecting 50g of gasses at a velocity of 400m/s . The accelerating force on the rocket will be