1.

A ball 3 cm in diameter and 300 g in weight is attached to the end of a thin string 46 cm long. If it is rotated uniformly in ahorizontal circle at the rate of 15 revolutions/s, what is thetension in the string?plz answer fast mates urgently need it I will mark it as brainliest..​

Answer»

Mass, m=0.2 kgRadius, r=1 mAngular speed, ω=90 rpm⟹ω= 6090 ⟹ω=1.5 rps⟹ω=3π rad/s(a) Angular velocity, ω=3π rad/s(b) CENTRIPETAL acceleration. a=rw 2 ⟹a=1×3π×3π⟹a=9π 2 m/s 2 (C) Centripetal FORCE, F=ma⟹F=0.2×9π 2 ⟹F=1.8π 2 N(d) Tension in string, = Centripetal Force⟹T=F=1.8π 2 N



Discussion

No Comment Found

Related InterviewSolutions