免费向心力计算器
计算匀速圆周运动中的向心力。
kg
m/s
m
Centripetal Force
16.6667 N
Centripetal Force vs Mass
公式
Centripetal Force
An object in circular motion requires a net inward force directed toward the center of the circle.
Formula
F_c = m * v² / r
This force does not do work since it is always perpendicular to velocity.
计算示例
A 2 kg ball on a 3 m string swings at 5 m/s.
- 01F_c = m * v² / r
- 02F_c = 2 * 25 / 3
- 03F_c = 50 / 3
- 04F_c = 16.667 N
常见问题
Is centripetal force a separate type of force?
No. Centripetal force is the net inward force that keeps an object on a circular path. It can be provided by tension, gravity, friction, or any combination.
What happens if centripetal force is removed?
The object moves in a straight line tangent to the circle at the point of release, following Newton's first law.
How is centripetal force related to centripetal acceleration?
F_c = m * a_c, where a_c = v²/r. The force and acceleration both point toward the center of the circle.
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