Circular Motion
Circular Motion
Circular Motion
s
q
r
s = rq
s = linear displacement
r = radius
q = angular displacement
(ii) the angle of inclination of the string to the vertical. ( Ans: 116.24 N, 32.53o )
2. Figure shows a toy runway. After release from a point such as X, a small model car runs down the slope, ‘ loops
the loop’, and travels on towards Z. The radius of the loop is 0.25 m. What is the minimum value of h the car can
have at P in order to remain in contact with the runway? ( Neglect the effect of friction. ) ( Ans: 0.625 m )
N
mg
Kepler’s laws
2. The line joining the sun and the planet sweeps out equal areas in equal times.
3. The squares of the periods of revolution of the planets are proportional to the