what happens to the frequency the centripetal force on an object in circular motion is doubled while the object keeps the same r
1 answer:
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Answer:
(a). The acceleration is 8.3 rad/s².
(b). The time is 3.0 sec.
Explanation:
Given that,
Rotation = 20.0 times
Time = 5.00 sec
We need to calculate the angular frequency
Using formula of angular frequency
put the value into the formula
We need to calculate the angular displacement
Using formula of angular displacement
We need to calculate the angular acceleration
Using equation of angular motion
Negative sign shows the opposite direction of the motion.
The acceleration is 8.3 rad/s².
We need to calculate the time
Using equation of angular motion
The time is 3.0 sec.
Hence, (a). The acceleration is 8.3 rad/s².
(b). The time is 3.0 sec.
Answer:
The centripetal force acting on the child is 39400.56 N.
Explanation:
Given:
Mass of the child is,
Radius of the barrel is,
Number of revolutions are,
Time taken for 10 revolutions is,
Therefore, the time period of the child is given as:
Now, angular velocity is related to time period as:
Now, centripetal force acting on the child is given as:
Therefore, the centripetal force acting on the child is 39400.56 N.