Particles of mass 10^-2kg is fixed to the tip of a fan blade which rotates with angular velocity of 100rad-1. If the radius of the blade is 0.2m, the centripetal force is

By: |Published on: Aug 26|Categories: Physics WAEC| 0 comments

A. 2 N
B. 20 N
C. 200 N
D. 400 N

Correct Answer:

Option B – 20 N

Explanation

F = mv²/r

= mω²r

(Since V = ωr)

F = 10¯²x 100² x 0.2

F = 20 N

Users Also Read These:

SEE ALSO  A body is projected into space with an initial velocity V0 at an angle θ to the horizontal. Which of the following statements is/are correct about its motion?

Copyright warnings! Do not copy.