Mechanics - Laws of Motion-1

1133

Sourish Ghosh ·2013-02-13 05:47:26

A = 1.5
B = 3

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Akash Anand I guess your answer is wrong. Better you specify it with direction. And remember string wont get lag.
Upvote·0· Reply ·2013-02-13 22:59:19
Sourish Ghosh If tension exists, then is the answer 0, 0 ?
Upvote·0· Reply ·2013-02-14 00:27:46
Akash Anand Of-course tension will be there, and answer is not zero.
Upvote·0· Reply ·2013-02-14 01:02:30
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486

Niraj kumar Jha ·2013-02-13 06:58:52

The acc. of B is twice that of A as tension in the string connecting A is two times that of B .
SO, acc. of B=3 and of A=1.5

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Akash Anand In which direction A & B will move, and if your answer is correct then sting should lag.
Upvote·0· Reply ·2013-02-13 23:00:49
Swarna Kamal Dhyawala A WOULD MOVE UPWARD WITH ACC OF 1.5 AND B WOULD MOVE DOWNWARDS WITH ACC OF 3
Upvote·0· Reply ·2013-02-14 01:26:53
Akash Anand @Swarna Kamal..you are wrong, according to your answer the leangth of the string going to increase with time.
Upvote·0· Reply ·2013-02-14 03:26:54
Swarna Kamal Dhyawala sir then what is the right answer
Upvote·0· Reply ·2013-02-14 04:11:23
Swarna Kamal Dhyawala i think A would move upward with 1.5 and B would move downward with 1.5
Upvote·0· Reply ·2013-02-14 04:13:40
Swarna Kamal Dhyawala no sorry A would move downward by 1.5 and B would move upward by 3
Upvote·0· Reply ·2013-02-14 05:18:25
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1057

Ketan Chandak ·2013-02-14 04:06:53

A upward with 3, B downward with 1.5

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Swarna Kamal Dhyawala how?
Upvote·0· Reply ·2013-02-14 04:09:03
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43

Jeet Sen Sharma ·2013-02-14 04:48:30

B upward with 1.5 , A downward with 3...

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Soumyabrata Mondal Acc. of B suld be twice of A
Upvote·0· Reply ·2013-02-14 04:57:30
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383

Soumyabrata Mondal ·2013-02-14 04:55:37

A=1.5 downward
B=3 upward

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1161

Akash Anand ·2013-02-14 05:24:55

The right answer will be .. Both block will move upward with the acceleration of 1 m/s².
Now anyone give the solution. :)

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Soumyabrata Mondal hmm any hint
Upvote·0· Reply ·2013-02-14 06:26:40
Akash Anand Tension in the string will be same,take acceleration of the block in any direction as you wish, write the constraint relation, & force balance equation and solve it. Try to be careful about the constraint relation.
Upvote·0· Reply ·2013-02-14 23:01:56
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36

Karan Bhuwalka ·2013-02-15 00:46:19

Let 5kg mass move by x, 10 kg mass by x' and truck by x" with account a,a',a" respectively
Tx+2Tx'=Tx" differentiating, and putting a" =3
a+2a'=3
By balancing F,
T-5g=5a
2T-10g=10a'
---> a-a'=0
a=1 and a'=1

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Akash Anand Good job :)
Upvote·0· Reply ·2013-02-16 01:19:43
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