WILL MEDAL AND FAAAN.
A stone with a mass of 50g is at the end of the string 1.5m long. If the stone is swinging with a velocity of 8m/s what force does the string exert on the stone?

Question

WILL MEDAL AND FAAAN.
A stone with a mass of 50g is at the end of the string 1.5m long. If the stone is swinging with a velocity of 8m/s what force does the string exert on the stone?

egenriether · Answer

Centripetal (radial) acceleration:
$$a_{rad}=\frac{ v ^{2} }{ r }$$
Newton's 2nd law of motion
$$F=ma$$

Thus radial force is:
$$F_{rad}=\frac{ mv ^{2} }{ r}$$
and
$$F=\frac{ 0.05*8^{2} }{ 1.5 }=2.13N$$

niyex · Answer

@egenriether great job but encourage learning. help with the formular then let the questionaire do the rest his/her self. that is the good way to learn. if there is any problem he/she will ask for clarity. But kudos to you guys, you guys are awesome.