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mass of stone = 0.25kg
r = 1.5 m
w = 40 rev/min = 80π/ min = 4π/3 rad/s
Tension = centripetal force = mrw^2
Tension = 0.25×1.5×(4π/3)^2 = 6.58N
_______________________________
Max tension =200 N
centripetal force = mv^2 / r
200 = 0.25×v^2 / 1.5
v^2 = 200×1.5/0.25 = 1200
v = √1200 = 34.64 m/s
Maximum speed with which stone can be whirled is 34.64 m/s
r = 1.5 m
w = 40 rev/min = 80π/ min = 4π/3 rad/s
Tension = centripetal force = mrw^2
Tension = 0.25×1.5×(4π/3)^2 = 6.58N
_______________________________
Max tension =200 N
centripetal force = mv^2 / r
200 = 0.25×v^2 / 1.5
v^2 = 200×1.5/0.25 = 1200
v = √1200 = 34.64 m/s
Maximum speed with which stone can be whirled is 34.64 m/s
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