Test SeriesFree PYQsExamsPricing

JEE Main Physics question

PhysicsSystems of Particles and Rotational MotionJEE Main

A rocket of mass 100 kg burns 0.1 kg of fuel per second. If the velocity of the exhaust gas is 1 km s⁻¹, then it lifts with an acceleration of [WB-JEE 2008]

Answer: (D)

Solution

Thrust = (dm/dt)· = 0.1 × 1000 = 100 N. a = Thrust/m = 100/100 = 1 ms⁻².

Question ID VK-152859