1.
vt=4.2 m/s (tangential velocity)
r=1 m (radius)
ac (centripetal acceleration)= vt²/r
ac=4.2²/1=17.6 m/s²
2.
vt=20 m/s
r (length of the cable)=15 m
ac=vt²/r=20²/15=26.7 m/s²
3.
vt=3 m/s
r (length of the chain)=5m
ac=v²/r=3²/5=1.8 m/s²
4.
vt=0.9 m/s
r=7cm (convert cm in m)=0.07 m
ac=v²/r=11.6 m/s²
5.
vt=6 m/s
r=0.5 m
ac=v²/r=6²/0.5=72 m/s²
