Quantrex Quantrex AcademyJEE · NEET · NDA PYQs with solutions Open app
JIPMER 2009
Exam
JIPMER
Year
2009
Subject
Physics
Chapter
Laws of Motion

JIPMER 2009 · Physics · Laws of Motion

Diwali rocket is ejecting 50 g of gases / s at a velocity of 400 ~m...

Diwali rocket is ejecting 50 g of gases /s/ \mathrm{s} at a velocity of 400 m/s400 \mathrm{~m} / \mathrm{s}. The accelerating force on the rocket will be

Options

  1. A22 dyne
  2. B20 N
  3. C20 dyne
  4. D100 N

Correct answer

B. 20 N

Step-by-step solution

The accelerating force on the rocket = upward thrust =ΔmΔt⋅u=\text{ upward thrust }=\frac{\Delta m}{\Delta t} \cdot u Given, ΔmΔt=50×10−3kg/s,v=400m/sSo,acceleratingforce\frac{\Delta m}{\Delta t}=50 \times 10^{-3} \mathrm{ kg} / \mathrm{s}, v=400 \mathrm{ m} / \mathrm{s} So, accelerating force=50 \times 10^{-3} \times 400 =20 N\mathrm{ N}
Practice Laws of Motion on Quantrex Academy →

More from Laws of Motion

The magnitude and direction of the acceleration produced in a body of mass 5 kg when two… NEET 2026A box of mass 15 kg is kept on the floor of a stationary trolley. The coefficient of… NEET 2026A car travels on a circular racetrack of radius 50 m, which is banked at an angle θ . If… NEET 2026There are two inclined surface of equal length (L) and same angle of inclination 45^ ∘… NEET 2025A uniform rod of mass 20 kg and length 5 m leans against a smooth vertical wall making an… NEET 2025A box of mass 5 kg is pulled by a cord, up along a frictionless plane inclined at 30^ ∘… NEET 2024A bob is whirled in a horizontal circle by means of a string at an initial speed of 10… NEET 2024A horizontal force 10 N is applied to a block A as shown in figure. The mass of blocks A… NEET 2024 Full Laws of Motion list All JIPMER PYQs