Mechanical Engineering - Engineering Mechanics - Discussion
Discussion Forum : Engineering Mechanics - Section 1 (Q.No. 21)
21.
The force required to move the body up the plane will be minimum if it makes an angle with the inclined plane __________ the angle of friction.
Discussion:
25 comments Page 1 of 3.
Sushma Jagityala said:
1 year ago
The force required to move a body up an inclined plane will be minimum, when the angle it makes with the inclined plane is less than the angle of friction. This ensures that the force applied is just enough to overcome the frictional force and initiate motion without unnecessary resistance.
Sakthi maharajan said:
4 years ago
Option: A is correct.
Just ready to move a body condition is IMPENDING MOTION (angle of inclined = angle of friction).
Static friction condition is (angle of inclined < angle of friction).
Just ready to move a body condition is IMPENDING MOTION (angle of inclined = angle of friction).
Static friction condition is (angle of inclined < angle of friction).
(2)
Aman said:
5 years ago
Here we are talking about angle at which have to apply the force to minimise it.
I agree with you @Mastwaseem.
I agree with you @Mastwaseem.
Hari Shankar said:
5 years ago
Thank you @Ritu raj that really helped.
Patel said:
6 years ago
Agree @Bharat_kumar.
You must ignore the friction first for the min value of P with ignoring that remains
P= W sin(a) only.
As (a) become smaller P becomes smaller,
So the current answer is Option B only.
You must ignore the friction first for the min value of P with ignoring that remains
P= W sin(a) only.
As (a) become smaller P becomes smaller,
So the current answer is Option B only.
Jeeva said:
6 years ago
If the inclination of the plane, with the horizontal, is less. The angle of friction, the body will be automatically in equilibrium. If in this condition, the body is required to be moved upwards or downwards, a corresponding force.
Is required, for the same. But, if the inclination of the plane is more than the angle of friction, the body will move down. And an upward force (P) will be required to resist the body from moving down the plane.
Is required, for the same. But, if the inclination of the plane is more than the angle of friction, the body will move down. And an upward force (P) will be required to resist the body from moving down the plane.
Abhilash said:
7 years ago
Option C is the correct answer.
Abhilash said:
8 years ago
Option B is the correct answer.
Mastwaseem said:
8 years ago
Dear friends. please read the question carefully.
1) First angle that is the angle of inclination and angle of friction is the same thing.
2) The second angle they r talking about is the angle of pulling of force with respect to the plane.
It must be equal to angle plane for less effort to pull it.
1) First angle that is the angle of inclination and angle of friction is the same thing.
2) The second angle they r talking about is the angle of pulling of force with respect to the plane.
It must be equal to angle plane for less effort to pull it.
Tagese Tafese said:
8 years ago
Angle of friction means the angle of the plane in which the body tends to over come the friction force.
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