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Standard XII

Physics

Rocket Mechanism

A rocket of i...

Question

A rocket of initial mass $3000 kg$ is burning fuel at the rate of $30 kg/s$ . Find the mass of the rocket after $10 s$ .

2700 kg

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3300 kg

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2000 kg

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0 kg

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Solution

The correct option is A $2700 kg$
Given, initial mass $(m_{0}) = 3000 kg$
Rate of fuel burnt $(μ) = 30 kg/s$
Then, mass at the end of $10 s,$
$m = m_{0} - μ t$
$= 3000 - 30 \times 10$
$= 2700 kg$

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A rocket of initial mass 3000 kg is burning fuel at the rate of 30 kg/s. Find the mass of the rocket after 10 s.

The correct option is A 2700 kgGiven, initial mass (m0)=3000 kg Rate of fuel burnt (μ)=30 kg/s Then, mass at the end of 10 s, m=m0−μt =3000−30×10 =2700 kg

A rocket of initial mass $3000 kg$ is burning fuel at the rate of $30 kg/s$ . Find the mass of the rocket after $10 s$ .

The correct option is A $2700 kg$
Given, initial mass $(m_{0}) = 3000 kg$
Rate of fuel burnt $(μ) = 30 kg/s$
Then, mass at the end of $10 s,$
$m = m_{0} - μ t$
$= 3000 - 30 \times 10$
$= 2700 kg$