# Mechanical Engineering - Theory of machines - Discussion

Discussion Forum : Theory of machines - Section 9 (Q.No. 3)

3.

The tractive force is maximum or minimum when the angle of inclination of crank with the line of stroke (θ) is equal to

Discussion:

13 comments Page 1 of 2.
Abbas said:
2 years ago

Yes, agree, c is the right answer.

Vinay BEL said:
4 years ago

135° and 315°.

Naveen Shahrukh said:
4 years ago

tractive force is maximum or minimum when the angle of inclination of the crank with the line of stroke (Î¸) is equal to 135° and 315°.

At these angles only we get Maximum of 1.414 and Minimum -1.414 while substituting angles this formula.

F = (1-c)mrw^2(cosθ -sinθ).

At these angles only we get Maximum of 1.414 and Minimum -1.414 while substituting angles this formula.

F = (1-c)mrw^2(cosθ -sinθ).

Chirag.tandel said:
6 years ago

Which option is right? Give me an explanation.

Deepak Sharma said:
6 years ago

Maximum at 135 and minimum at 315.

Obak said:
6 years ago

Answer C is right.

Prakash said:
7 years ago

C is the correct answer.

Kajal Sharma said:
7 years ago

I think C is right.

Xiyaz said:
7 years ago

I think the correct answer is C.

Ravi saini said:
7 years ago

But at 135 and 315 tractive force max at both value not min at 315.

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