SATHEE: Laws of Motion - Result Question 15

Laws of Motion - Result Question 15

15. A satellite in a force free space sweeps stationary interplanetary dust at a rate $(d M / d t) = α v$ . The acceleration of satellite is

[1994]

(a) $\frac{- 2 α v^{2}}{M}$

(b) $\frac{- α v^{2}}{M}$

(d) $- α v^{2}$

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Answer:

Correct Answer: 15. (b)

Solution:

(b) Thrust on the satellite,

$F = \frac{- v d M}{d t} = - v (α v) = - α v^{2}$

Acceleration $= \frac{F}{M} = \frac{- α v^{2}}{M}$

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Laws of Motion - Result Question 15

15. A satellite in a force free space sweeps stationary interplanetary dust at a rate (dM/dt)=αv. The acceleration of satellite is

Answer:

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15. A satellite in a force free space sweeps stationary interplanetary dust at a rate $(d M / d t) = α v$ . The acceleration of satellite is