Grade 11Mechanics

A sphere of radius 25 cm and mass 1 kg is hung by a string of negligible mass and length 40 cm, then tension in string is ????

Parthi

8 Years agoGrade 11

2 Answers

Venkat

8 Years ago

See below for the answer. First calculate the angle made by the string with horizontal and the resolve tension force to calculate the tension in string. The correct option is (A).

Aaryan Shivhare

7 Years ago

Answer is 8 as the angle theta will sbtended on wall not on centre of circle

So costhetha=✓l^2-r^2/r

That means Tcostheta=mg

Or T=mg*r/✓l^2-r^2

That will give

T= 10*0.25/0.3122

T=8.0076N

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A sphere of radius 25 cm and mass 1 kg is hung by a string of negligible mass and length 40 cm, then tension in string is ????

Parthi

2 Answers

Venkat

Aaryan Shivhare

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