Mechanical Engineering - Engineering Mechanics - Discussion

Discussion Forum : Engineering Mechanics - Section 1 (Q.No. 7)
7.
The range of projectile on a downward inclined plane is __________ the range on upward inclined plane for the same velocity of projection and angle of projection.
less than
more than
equal to
Answer: Option
Explanation:
No answer description is available. Let's discuss.
Discussion:
46 comments Page 2 of 5.

Vaibhav said:   9 years ago
I Guess the Range of the projectile depends on the angle of the upward and downward inclination.

If they have the same inclination angle, the range of the would be same. If there is the difference in their angle, then the range of the projectile will also be affected. What do you say?

Ram Mohan Kartha said:   1 decade ago
I think they will be of the same values even if the plane that is being his is inclined up or down. They will his only a particular point with respect to horizontal distance (i.e. Range).

But the height of impact will change depending on the inclination. Agree. ?
(1)

Prerana said:   7 years ago
How come a range of projectile on the downward inclined plane will be more? Should it be less na?

Because speed will be more, as gravity is acting, so that distance will be covered in less time. Please, someone, clarify.

Mr jalendar said:   8 years ago
I think answer is option B because of for example a stone you through in upward direction while coming return it will be more speed as you all know this simple technique thank you all.
(1)

Sandeep sanker said:   6 years ago
r=2usin^2(theta)/g. Here denominator is g so the range is inversely proportional to g. On uphill g has more influence on projectile than downhill so its range decreases.
(1)

KSG said:   1 decade ago
During downward projection from inclined plane, range=horizontal range from ground+some value.

During upward projection, range=horizontal range from ground-some value.

Navin kumar said:   1 decade ago
In vertical direction velocity component is v sin* but in horizontal direction velocity component is vcos*. Hence cos*<sin* if we increase the angle upto 90 degree.

Scientist sakthivel said:   8 years ago
In inclined projectile

R=(u^2)/g(1(+/-)sin deta ) for up +, down -.

So,
For 45 deg ,1/(1+sin45) is 1.4.
And same, 1/(1-sin45) is 3.3.
Therefore
Down > up.

Sukanta said:   8 years ago
During upword prjectile accleration due to gravity act negetively and during its act (+). So valocity during downward direction is more.

Dawange Harish said:   1 decade ago
In upper direction gravity opposite to velocity & in downward in the direction & it helps & that's why more than.


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