WAEC - Physics (1990 - No. 2)
A particle of mass 2.5 x 10-6kg revolving around the earth has a radial acceleration of 4 X 107 ms-2. What is the centripetal force of the particles?
6.25 x 10-14N
1.60 x10-13N
5.00 x 10N
1.00x102N
2.00x1O2N
Giải thích
F = ma = 2.5 x 10-6 x 4 x 107 = 100N