# Experimental Skills-Screw Gauge (NEET (NTA)-National Eligibility cum Entrance Test (Medical) Physics): Questions 25 - 29 of 29

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## Question number: 25

» Experimental Skills » Screw Gauge

MCQ▾

### Question

Four bodies of equal mass start moving with same speed as shown in the figure. In which of the following combination the center of mass will remain at origin?

### Choices

Choice (4) Response

a.

a and c

b.

a and b

c.

b and d

d.

c and d

## Question number: 26

» Experimental Skills » Screw Gauge

MCQ▾

### Question

A cricket bat is cut at the location of its center of mass as shown in the fig. Then

### Choices

Choice (4) Response

a.

Mass of handle piece is double the mass of bottom piece

b.

The handle piece will have larger mass

c.

The two pieces will have the same mass

d.

The bottom piece will have larger mass

## Question number: 27

» Experimental Skills » Screw Gauge

MCQ▾

### Question

Two particles of masses m l and m 2 initially at rest start moving towards each other under their mutual force m attraction. The speed of the center of mass at any time u when they are at a distance r apart, is

### Choices

Choice (4) Response

a.

b.

c.

zero

d.

## Passage

A system consists of block A and B each of mass m connected by a light spring as shown in the figure with block B in contact with a wall. The block A compresses the spring by 3mg /k from natural length of spring and then released from rest. Neglect friction anywhere.

## Question number: 28 (2 of 3 Based on Passage) Show Passage

» Experimental Skills » Screw Gauge

MCQ▾

### Question

Acceleration of center of mass of system comprising A and B just after A is released is

### Choices

Choice (4) Response

a.

3g

b.

0

c.

3g/2

d.

All of the above

## Question number: 29 (3 of 3 Based on Passage) Show Passage

» Experimental Skills » Screw Gauge

MCQ▾

### Question

Velocity of center of mass of system comprising A ands when block B just loses contact with the wall

### Choices

Choice (4) Response

a.

b.

c.

d.

Question does not provide sufficient data or is vague

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