Here's how to calculate the centripetal force:
Formula:
* F = (m * v²) / r
Where:
* F is the centripetal force (in Newtons)
* m is the mass of the object (1 kg)
* v is the speed of the object (in meters per second)
* r is the radius of the circle (4 meters)
Example:
Let's say the object's speed is 5 meters per second (v = 5 m/s).
* F = (1 kg * (5 m/s)²) / 4 m
* F = (1 kg * 25 m²/s²) / 4 m
* F = 6.25 Newtons
Therefore, the centripetal force needed to keep a 1 kg object moving at 5 m/s in a circle with a 4 meter radius is 6.25 Newtons.
To get the answer for your specific case, replace '5' with the actual speed of the object in the formula above.
