Rotational Motion Quiz 1 – Punjab Meritorious School Preparation Portal

Welcome to your Rotational Motion Quiz 1 CBT TEST

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Question is mentioned below :

body B

body C

does not shift

depends on the height of breaking

Two particles which are initially at rest, move towards each other under the action of their internal attraction. If their speeds are v and 2v at any instant, then the speed of centre of mass of the system will be

zero

1.5 v

Question is mentioned below :

0.63 A ̇ from carbon atom

6.3 A ̇ from carbon atom

0.12 A ̇ from oxygen atom

1 A ̇ from the oxygen atom

The reduced mass of two particles having masses m and 2m is

2m / 3

m / 2

Three identical spheres, each of mass 3 kg are placed touching each other with their centres lying on a straight line. The centres of the spheres are marked as P, Q and R respectively. The distance of centre of mass of system from P is

The centre of mass of a solid cone along the line from the centre of the base to the vertex is at

one-fourth of the height

one-third of the height

one-fifth of the height

none of these

A ladder is leaned against a smooth wall and it i allowed to slip down on a frictionless floor. Which figure represents trace of its centre of mass ?

Three identical spheres each of mass 1 kg are placed touching one another with their centres in a straight line. Their centres are marked as A, B, C respectively. The distance of centre of mass of the system from A is

Question is mentioned below :

A small disc of radius 2 cm is cut from a disc of radius 6 cm. If the distance between their centres is 3-2 cm, what is the shift in the centre of mass of the disc?

0.4 cm

1.2 cm

1.8 cm

2.4 cm

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