Answer: 250n
Explanation:
The formula for gravitational force is: F = (gMm)/r^2
There are two factors at play here:
1) The mass of the planet 'M'
2) The radius 'r'
We can ignore the small M and the g, they are constants that do not alter the outcome of this question.
You can see that both M and r are double that of earth. So lets say earth has M=1 and r=1. Then, new planet would have M=2 and r=2. Let's sub these two sets into the equation:
Earth. F = M/r^2 = 1/1
New planet. F = M/r^2 = 2/4 = 1/2
So you can see that the force on the new planet is half of that felt on Earth.
The question tells us that the force on earth is 500n for this person, so then on the new planet it would be half! So, 250n!
There are other Brainly websites for non-English users.
The bob passes the lowest point <em><u>twice</u></em> during every complete swing.
The period of this pendulum is <em>0.2 seconds</em>.
Frequency = 1/period
Frequency = 1/0.2 sec
<em>Frequency = 5 Hz.</em> (A very very very short, fast pendulum.)
Note:
The mass of the bob, the angle from the vertical (as long as it's small), the color of the string, and the day of the week have no effect on the period. Only the length of the string has.
Acceleration is a change in speed, so if the car has a constant speed then it's acceleration is 0m/s^2.
