After rotating by 60° about a centre, a figure looks exactly the same as its original position. At what other angles will this happen for the figure?

After rotating by 60^o about a centre, a figure looks exactly the same as its original possition. At what other angles will this happen for the figure?

What is the rotational symmetry about the point O and line of symmetry of the given figure?

(a) Can you now tell the order of the rotational symmetry for an equilateral triangle ? (b) How many position are there at which the triangle looks acactly the same when rotated about its centre by 120^(@) ?

A rod and a block are of same mass. Initially rod is in horizontal position. What will be acceleration of tip of the rod just after the system is released from this position shown in figure.

Three dipoles each of dipole moment of magnitude p are placed tangentially on a circle of radius R in its plae positioned at equal angle from each other as shown in the figure. Then the magnitude of electric field intensity at the centre of the circle will be :

Three dipoles each of dipole moment of magnitude p are placed tangentially on a circle of radius R in its plae positioned at equal angle from each other as shown in the figure. Then the magnitude of electric field intensity at the centre of the circle will be :

In the figure a=60^@ find other angles.