Finding the Correct Force for Acceleration in Kinetics of Translation

In summary, the conversation discusses a problem involving a 200kg body supported by wheels and a sled, and the task is to calculate the value of P needed to cause an acceleration of 0.02g. The equations used to solve the problem are listed and the final answer should be around P=2350N, but the author's solution yields a different answer.
  • #1
tjohnbridge
1
0

Homework Statement


A 200kg body is supported by wheels @ B to roll freely w/o friction & by a sled @ A with which uk = 0.5. Compute the value of P to cause an acceleration of 0.02g. (g=9.8m/s^2)

NOTE: Image not drawn to scale.
http://www.geocities.com/timothybridge/kinOftrans.JPG

Homework Equations



Efx=max

Efy=0

Emcg=0

Fa=uNa

The Attempt at a Solution



P-Fa=200(0.02)(9.8)

Na+Nb=1960

Nb(1.5)-Na(1.5)+P(1.2)-Fa(1.8)=0

Fa=0.5Na

solving 4 equations simultaneously,

P=491.78N
Na=905N
Nb=1055N

My professor said the answer should be around P=2350N

Can someone identify what's wrong with my solution?
 
Last edited:
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  • #2
Recheck your third and first equation.
 

Related to Finding the Correct Force for Acceleration in Kinetics of Translation

1. What is translation in terms of molecular biology?

Translation is the process by which the genetic information stored in DNA is converted into functional proteins. This process occurs in the ribosomes and involves the decoding of the genetic code by transfer RNA (tRNA) and the formation of peptide bonds between amino acids to create a polypeptide chain.

2. What are the key steps involved in translation?

The key steps in translation include initiation, elongation, and termination. During initiation, the ribosome assembles around the mRNA and the first tRNA is positioned at the start codon. In elongation, the ribosome moves along the mRNA, adding amino acids to the growing polypeptide chain. Termination occurs when the ribosome reaches a stop codon and the completed polypeptide is released.

3. How is the rate of translation regulated?

The rate of translation is regulated by various factors, including the availability of ribosomes, tRNA, and amino acids. Additionally, regulatory proteins can bind to specific sequences on the mRNA and either enhance or inhibit translation. Post-translational modifications of proteins can also affect their translation rates.

4. What is the role of energy in translation?

Translation requires energy in the form of ATP to drive the movement of the ribosome along the mRNA and the formation of peptide bonds between amino acids. This energy is also needed for the correct folding and modification of the newly synthesized protein.

5. How does mutation affect the kinetics of translation?

Mutations in the DNA sequence can alter the sequence of amino acids in a protein, leading to changes in its structure and function. This can affect the kinetics of translation by either slowing down or speeding up the process. Additionally, mutations in regulatory regions of the DNA can also affect the rate of translation by altering the expression of certain genes.

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