A car moves around a curve at a constant speed. When the car goes around the arc subtending `60^(@)` at the centre, then the ratio of magnitude of instantaneous acceleration to average acceleration over the `60^(@)` arc is `:`

In the above question, the magnitude of the average acceleration over the arc of 60^(@) is

(a) A car moves around a circular arc subtending an angle of 60° at the centre. The car moves at a constant speed u_(0) and magnitude of its instantaneous acceleration is a_(0) . Find the average acceleration of the car over the 60° arc. (b) The speed of an object undergoing uniform circular motion is 4 m//s . The magnitude of the change in the velocity during 0.5 sec is also 4 m//s . Find the minimum possible centripetal acceleration (in m//s^(2)) of the object.

If in two circles, arcs of the same length subtend angles 60^(@)and75^(@) at the centre, find the ratio of their radii.

If in two cirlces arcs of the same length subtend angles 60^(@) and 75^(@) at the centre, find the ratio of their radii.

If in two circles, arcs of the same length subtend angles 60^@ and 75^@ at the centre, find the ratio of their radii.

If in two circles, arcs of the same length subtend angles 60^@ and 75^@ at the centre, find the ratio of their radii.

If two circles arc of the same length subtend angles 60^@ and 75^@ at the centre , Find the ratio of their radii.

The arcs of sample in two circles subtend 60 ^@ and 75^@ at the centre . Find the ratio of their radii.