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Salsk061 [2.6K]
3 years ago
12

By what factor would a person’s weight be increased if Earth had 10 times its present mass, but the same volume?

Physics
1 answer:
Dafna1 [17]3 years ago
6 0

Answer:

10 times

Explanation:

The weight of the person is defined as the product of mass of person and the acceleration due to gravity of that planet.

Let the gravity is g.

W = m x g     .... (1)

Now the value of g depends on the mass of earth when the radius of earth is constant.

g' = 10 g

So, W'  = m x g' = m x 10 g = 10 mg = 10 W     (from (1)

So, the weight of the person becomes 10 times.

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A contestants spin a wheel when it is their turn in a game show. One contestant gives the wheel an initial angular speed of 3.40
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Answer:

4.62 s

Explanation:

We are given that

Initial angular speed,\omega=3.4 rad/s

\theta=1\frac{1}{4} rev=\frac{5}{4}\times 2\pi=2.5\pi rad

\omega'=0

\omega'^2-\omega^2=2\alpha \theta

Substitute the values

0-(3.4)^2=2\times 2.5\pi \alpha

\alpha=\frac{-(3.4)^2}{2\times 2.5\pi}=-0.736 rad/s^2

\omega'=\omega+\alpha t

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