Question

A rocket is moving with acceleration 3g.calculat the effective weight of an astronaunt sitting in the rocket when his actual weight is 75 kg

Answer 1

Question #30953

A rocket is moving with acceleration 3g.calculat the effective weight of an astronaut sitting in the rocket when his actual weight is 75 kg

Solution:

The actual weight of the body is

$P = mg$, where $m$ is the mass, $g$ is the acceleration due to the gravity

When the rocket is moving with acceleration the effective weight is as sum

$P_{actual} = P + ma$, where $a$ is the acceleration of the rocket, $m$ is the mass

Such as $a = 3g$

$$P_{actual} = P + 3mg = P + 3P = 4P$$ $$P_{actual} = 4 * 75 = 300 \, kg$$

Answer: the effective weight is 300 kg.