02-04-2018
Physics

contestada

First 5 please with work

First 5 please with work class=

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demariaa01 demariaa01

03-04-2018

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

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