Question

2. In what time will * 7500 amount to * 8625, if simple interest is reckoned at 7
B. In what time will * 3600 amount to 4320
72
% per annum?​

Answer 1

Answer:

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In the figure, the blocks A, B and C of mass m each have acceleration a

1

, a

2

and a

3

respectively. F

1

and F

2

are external forces of magnitude 2 mg and mg respectively. Then

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expand

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Solution

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Correct option is

A

a

1

=a

2

=a

3

equation of motion of the three case are as follows-

CASE A

2mg−mg=ma

1

⇒ a

1

=g

CASE B

T−mg=ma

2

2mg−T=2ma

2

⇒ a

2

=

3

g

CASE C

T−mg=ma

3

mg+mg−T=ma

3

⇒ a

3

=

2

g

.