The question solve by the sir was wrong.
Fricton force given =5000 for a wagon but they have considered force of for 4wagons as 4000.

Kindly tell me what I say is correct or wrong.Kindly ensure it.

Your regards,
Aniruddha

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Dear student,

Kindly specify the complete question so that we can help you in a better way.

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Sir/Ma'am,

The question asked by you in equations of motion the answer ellaborated gives an equation (D/5)to the power 1/2 + D/340=6.53

Kindly please guide me how to solve the equation furture i.e., how will I remove the root.

Sir give further solution. It is becoming difficult for me

Dear sir/ma'am,

I was watching a video of chapter Force and Laws of Motion, in that chapter there was a video (Engine Problem one video) in that video question was the same as my ncert science textbook (question no. 7 of the book). The question was as follows,

A 8000 Kg engine pulls a train of 5 wagons, each of 2000 Kg, along a horizontal track. If the engine exerts a force of 40000 N and the track offers a friction force of 5000 N, then calculate :

A. the net accelerating force;

B.the acceleration of the train ; and

C. the force of wagon 1non wagon 2.

So, my droughts are that

1.In the video he did find the acceleration of the train(3.5 m/s²)but he excluded the mass of the train, and when I find the acceleration of the train including the mass of the train my answer was same as in the book(1.944 m/s²) So, why did he excluded the mass of train?

2.The third part of the question was to find the force of wagon 1 on wagon 2, he did find that also but in the book answer is different (15556).Why?

Can I get a solution of this question? (all the parts)

Question 7 NCERT Pg 128

A 8000 kg engine pulls a train of 5 wagons, each of 2000 kg along a horizontal track. If the engine exerts a force of 40000 N and the track offers a friction force of 5000 N, then calculate:

(a) the net accelerating force;

(b) the acceleration of the train; and

{The explanation of this question on the Byju's premium app is wrong; the weight of the engine has not been considered}

Q. Pls tell me sir, E=hv is for particle or wave ?

Question: Regarding assertion and reason, choose the correct option.
Assertion[A]: Excessive inbreeding leads to inbreeding depression
Reason[R]: Increased homozygosity leads to loss of heterozygosity

in this kindly tell me reason is correct explanation of assertion or not?

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The question solve by the sir was wrong. Fricton force given =5000 for a wagon but they have considered force of for 4wagons as 4000. Kindly tell me what I say is correct or wrong.Kindly ensure it. Your regards, Aniruddha

Dear student, Kindly specify the complete question so that we can help you in a better way. Regards

The question solve by the sir was wrong.
Fricton force given =5000 for a wagon but they have considered force of for 4wagons as 4000.

Kindly tell me what I say is correct or wrong.Kindly ensure it.

Your regards,
Aniruddha

Dear student,

Kindly specify the complete question so that we can help you in a better way.

Regards