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Class 11
Physics
Laws of Motion
a rocket with a lift off mass 20 000 kg is blasted...

Question:
A rocket with a lift-off mass 20,000 kg is blasted upwards with an initial acceleration of 5.0 m s^–2. Calculate the initial thrust (force) of the blast.

Answer:

Mass of the rocket, m = 20,000 kg

Initial acceleration, a = 5 m/s²

Acceleration due to gravity, g = 10 m/s²

Using Newton’s second law of motion, the net force (thrust) acting on the rocket is given by the relation:

F – mg = ma

F = m (g + a)

= 20000 × (10 + 5)

= 20000 × 15 = 3 × 10⁵ N

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Question:
A rocket with a lift-off mass 20,000 kg is blasted upwards with an initial acceleration of 5.0 m s^–2. Calculate the initial thrust (force) of the blast.

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Question: A rocket with a lift-off mass 20,000 kg is blasted upwards with an initial acceleration of 5.0 m s–2. Calculate the initial thrust (force) of the blast.

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Question:
A rocket with a lift-off mass 20,000 kg is blasted upwards with an initial acceleration of 5.0 m s^–2. Calculate the initial thrust (force) of the blast.