A model train with a mass of $2 kg$ is moving along a track at $15 (cm)/s$ . If the curvature of the track changes from a radius of $5 cm$ to $12 cm$ , by how much must the centripetal force applied by the tracks change?

Question

1361 views around the world

You can reuse this answer
Creative Commons License

Answer 1 · 2016-04-16T04:29:31

Change in force $=52,500" "$ Dynes

Force at radius $r_1=5$

$F_1=mv^2/r_1=2000(15)^2/5=90000 " "$ Dynes

Force at radius $r_2=12$

$F_2=mv^2/r_2=2000(15)^2/12=37500 " "$ Dynes

Change in force $=F_1-F_2=90000-37500=52500" "$ Dynes

God bless....I hope the explanation is useful.

A model train with a mass of 2 kg2 kg is moving along a track at 15 (cm)/s15 (cm)/s. If the curvature of the track changes from a radius of 5 cm5 cm to 12 cm12 cm, by how much must the centripetal force applied by the tracks change?