A metallic rod of mass `20kg` and of uniform thickness rests against a wall while the lower end of rod is in contact with rough

A metallic rod of mass `20kg` and of uniform thickness rests against a wall while the lower end of rod is in contact with rough floor. The rod makes an angle `60^@` with floor. If the weight of rod produces a torque `150Nm` about its lower end, the length of rod (`g=10 ms^(-2)`)
A. `1.5 m`
B. `2m`
C. `3m`
D. `4m`

A metallic rod of mass `20kg` and of uniform thickness rests against a wall while the lower end of rod is in contact with rough floor. The rod makes a

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