# Circular Motion Mcqs

Our collections of Multiple choice questions and answers focuses on study of Circular Motion in Physics. These questions are chosen from a collection of most authoritative and best reference books on Physics. Our aim is to prepare an individual for competitive exams like NTS, GAT, ECAT, MDCAT, Teaching jobs Tests and Chemical industry job interviews. One should practice our Mcqs to assimilate knowledge on Circular Motion in Physics comprehensively.

## 2. A body moving along the circumference of a circle completes two revolutions. If the radius of the circular path is R the ration of displacement to the covered path will be

? R

2? R

Zero

4? R

## 3. A body of 2 kg is suspended form the ceiling of an elevator moving up with an acceleration g. Its apparent weight in the elevator will be

9.8 N

19.6 N

129.4 N

39.2 N

## 4. A cyclist cycling around a circular racing track skids because

The centripetal force upon him is less than limiting friction

The centripetal force upon him is greater then limiting friction

The centripetal force upon him is equal to the limiting friction

The friction between the tyres of the cycle and road vanishes

## Answer & Solution

**B . The centripetal force upon him is greater then limiting friction**

No Solution for this Answer..! Report or Discus this Question

## 5. A hoop and disc have same mass and radius. Their rotational K.E are related by an equation

K.Ehoop = K.Edisc

K.Ehoop = 2K.Edisc

K.Ehoop = 1/2K.Edisc

K.Ehoop = 4K.Edisc

## Answer & Solution

**B . K.Ehoop = 2K.Edisc**

No Solution for this Answer..! Report or Discus this Question

## 6. A man of weight W is standing on an elevator which is ascending with an acceleration a. The apparent weight of the man is

Mg

Mg - ma

Mg + ma

Mg - ma

## 7. A satellite moving round the earth constitutes

An inertial frome of reference

Non inertial frame

Neither inertial nor non inertial

Both inertial and non inertial

## Answer & Solution

**B . Non inertial frame**

No Solution for this Answer..! Report or Discus this Question

## 8. A stone is whirled in a vertical circle at the end of a string. When the stone is at the highest position the tension in the string is

Maximum

Zero

Equal to the weight of the stone

Less than the weight of the stone

## Answer & Solution

**C . Equal to the weight of the stone**

No Solution for this Answer..! Report or Discus this Question

## 9. According to Einstein the gravity interaction is possible between

Material objects only

Material objects and electromagnetic radiation only

Electromagnetic radiations

None of the above

## Answer & Solution

**B . Material objects and electromagnetic radiation only**

No Solution for this Answer..! Report or Discus this Question

## 10. Angular speed of seconds hand of a watch in rads-1 is

?

?/2

?/30

?/180

## 11. Centripetal force performs

Maximum work

Minimum work

Negative work

No work

## 12. Geo-stationary satellite completes one rotation around earth in

3 hours

6 hours

12 hours

24 hours

## Answer & Solution

**D . 24 hours**

No Solution for this Answer..! Report or Discus this Question

## 13. How many days would be in a year if the distance between the earth and the sun were reduced to half of its present value (assuming circular orbit)?

365 days

730 days

329 days

129 days

## Answer & Solution

**D . 129 days**

No Solution for this Answer..! Report or Discus this Question

## 14. If a body of mass 10 kg is allowed to fall freely, its weight becomes

Zero

89N

9.8 N

10N

## 15. If a car moves with a uniform speed of 2 ms-1 in a circle of radius 0.4. Its angular speed is

4 rad. S-1

5 rad. S-1

1.6 rad. S-1

2.8 ms-1

## Answer & Solution

**B . 5 rad. S-1**

No Solution for this Answer..! Report or Discus this Question