Question

Calculate the centripetal force acting on a small mass of 0.25 kg rotating 1800 revolution/ min on a radius 200 mm.​

Answer 1

Explanation:

An acceleration must be produced by a force. Any force or combination of forces can cause a centripetal or radial acceleration. Just a few examples are the tension in the rope on a tether ball, the force of Earth’s gravity on the Moon, friction between roller skates and a rink floor, a banked roadway’s force on a car, and forces on the tube of a spinning centrifuge. Any net force causing uniform circular motion is called a centripetal force. The direction of a centripetal force is toward the center of curvature, the same as the direction of centripetal acceleration. According to Newton’s second law of motion, net force is mass times acceleration:

F

net

=

m

a

.

For uniform circular motion, the acceleration is the centripetal acceleration:.

a

=

a

c

.

Thus, the magnitude of centripetal force

F

c

is

F

c

=

m

a

c

.