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vazorg [7]
3 years ago
6

Which statement is true about an object moving in a circular motion due to centripetal force, F, when the mass is doubled? A. It

s centripetal force would be doubled. B. Its centripetal force would be unaltered. C. Its centripetal force would be reduced by half. D. Its centripetal force would be reduced by a factor of 1/4.
Physics
1 answer:
Allushta [10]3 years ago
3 0
Force = [Mass x (velocity)^2]/Radius
Therefore,
The mass and the force are directly proportional.If you double the mass,the force will be doubled too.

A. Its centripetal force would <span>be doubled.</span>
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A satellite of mass 5600 kg orbits the Earth and has a period of 6200 s.
Troyanec [42]

Answer:

(a)  Radius of orbit will be =7.32\times10^6m

(b) Earth gravitational force will be =4.18\times 10^4N

(C) Height will be 0.92\times 10^6m

Explanation:

We have given

Mass of the earth, M=6\times 10^{24}kg

Mass of the satellite, m = 5600 kg

Radius of earth, R=6.4\times 10^6m

Time period T = 6200 sec

We know that \omega =\frac{2\pi }{T}=\frac{2\times 3.14}{6200}=0.00101rad/sec

Now

(a) We know that \omega ^2=\frac{GM}{R^3}

R^3=\frac{GM}{\omega ^2}  

R^3=\frac{6.67\times 10^{-11}\times 6\times 10^{24}}{0.00101 ^2}

R^3=3.92\times 10^{20}

Radius of the orbit R=7.32\times 10^6m

(b)

Force F=\frac{GMm}{R^2}=\frac{6.67\times 10^{-11}\times 6\times 10^{24}\times 5600}{(7.32\times 10^6)^2}=4.18\times 10^4N

(c)

Altitude h=radius\ of\ orbit-radius\ of\ earth=7.32\times 10^6-6.4\times 10^6=0.92\times 10^6m

8 0
3 years ago
If two cars have the same velocity do they have the same acceleration
Allisa [31]
No, if it takes less time, the acceleration is greater.

Hope this helps!
3 0
3 years ago
An object travelling at 12 m/s has 64.8j of stored kinetic energy. What is the mass of the object, in grams?​
bekas [8.4K]

Answer:

So u divided 12 divided by 64.8 okay

Explanation:

and when I getc the answer that's urs answer

4 0
3 years ago
A transformer has a primary voltage of 115 V and a secondary voltage of 24 V. If the number of turns in the primary is 345, how
Leona [35]
<span>345/115=3 3*24=72 the answer is B. 72 </span>
8 0
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You are standing in a moving bus, facing forward, and you suddenly fall forward as the bus comes to an immediate stop. The force
Leviafan [203]

Answer:

D

Explanation:

Static friction is a force that keeps an object at rest. It must be overcome to start moving the object. Once an object is in motion, it experiences kinetic friction.

8 0
3 years ago
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