Pure Rotation

Assertion: A ball is released on a rough ground in the condition shown in figure. it will start pure rolling after some time towards left side. Reason: Friction will convert the pure rotational motion of the ball into pure rolling

Assertion : Speed of any point on rigid body executing rolling motion can be calculated by expression v =r omega , where r is distance of point from intantaneous centre of rotation Reason : Rolling motion of rigid body can be considered as a pure rotation about instantaneous centre of rotation.

The specific rotation of a pure enantiomer is +16^@ . The observed rotation, if it is isolated from a reaction with 25% racemisation and 75% inversion is

The specific rotation of a pure enantiomer is +10^(@) . The observed rotation, if it is isolated from a reaction with 30% recemisation and 70% inversion is

a. The specific rotation of a pure enantiomer is +10^(@) . What will be its observed rotation if its is isolated from a reaction with i. 30% racemisation and 70% retention. ii. 70% racemisation and 30% inversion. b. What is the percentage composition of a mixtrue of two enantiomers whose rotation is -10^(@) ? The specific rotation of pure enantiomers is -20^(@) . c. What is the optical purity of a sample having an [alpha]_(obs.)=+9.0^(@) if [alpha]_(D)=+12^(@) .

The specific rotation of a pure enantiomers is +12^(@) . What will be its observed rotation if it is isolated form a reaction with 20% racemization and 80% retention.

The specific rotation of a pure enantiomers is +12^(@) . What will be its observed rotation if it is isolated form a reaction with 80% racemization and 20% inversion.

The specific rotation of a pure enantiomer is +16^(@) its observed rotation if it is isolated from a reaction with 25% racemisation and 75% retention is,

Rigid Body||Axis OF Rotation||Types OF Rotation||Centre OF Rotation

Rotational Motion - Pure Rolling