Experimental Skills (NEET Physics): Questions 30 - 33 of 66

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Question number: 30

» 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?

System of four mass ABCD

System of Four Mass ABCD

In above figure we show the four body of equal mass make square, having same speed

Choices

Choice (4) Response
a.

a and c

b.

a and b

c.

b and d

d.

c and d

Question number: 31

» 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

Cricket bat – Finding center of mass for this figure

Cricket Bat – Finding Center of Mass for This Figure

In above figure we show the cricket bat, which cut at its center of mass

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: 32

» 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.

(Gm1m2r2.1m1+m2)t

b.

(Gm1m2r2.1m2)t

c.

zero

d.

(Gm1m2r2.1m1)t

Passage

Read the passage given below and answer the questions that follow:

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.

Block system with 2 blocks A and B

Block System With 2 Blocks a and B

In above figure we show that block A and B which connected with spring.

Question number: 33 (1 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

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