Questions
A small but heavy block of mass 10 kg is attached to a wire 0.3 m long. Its breaking stress is . The area of the cross section of the wire is . The maximum angular velocity with which the block can be rotated in the horizontal circle is
detailed solution
Correct option is A
mrω2== Breaking stress × Cross-sectional area 10 × 0.3w2= 4.8 × 107× 10−6= 48⇒ω2=483=16⇒ω= 4 rad/sTalk to our academic expert!
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