Questions
A uniform rod PQ of length I is hinged at one end p and is kept in horizontal position by a massless string tied to point Q as shown in fig. ( ). If the string is cut, the
initial angular acceleration of the rod will be
detailed solution
Correct option is D
When the string is cut, the weight M g of the rod acts at the centre. It produces a torque in the rod about P, given byτ=Mg(L/2) or Iα=Mg(L/2)∴ 13ML2α=MgL2α=3g2LTalk to our academic expert!
Similar Questions
A body is placed on a horizontal frictionless surface. When a horizontal force F is applied on the body, it is observed that the body makes only translational motion. The which of the following points may be the positions of its centre of mass?
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