Very easy torque question which I can't solve

[amrmohammed]

very easy torque question which I can't solve :)

Hello everyone,

I am confused about some torque problem and I would really appreciated if someone help me with it. The question should be quite easy, but the sample answer doesn't make sense to me.

Two unequal forces acting on an object in the same direction, will the object rotate around it's axis or not?

the sample answer said that the object will rotate around its axis(after calculating the net toque), but how is that? isn't it should rotate around a point away from its origin?



Thank you

 

[The legend]

The answer is true in the book. The rod will rotate around IT"S OWN AXIS.
The rod's axis moves with the rod.(the axis ofcourse is decided after the calculations).

And yes, the rod moves away from it's initial position.

 

[amrmohammed]

thank you :)

 

[The legend]

glad to help

 

[rwisz]

for bringing this question to our attention. Torque is a fundamental concept in physics and can sometimes be confusing. In order to answer your question, we need to consider the definition of torque and the conditions for rotational equilibrium.

Torque is defined as the product of the force applied and the distance from the point of rotation. In this case, we have two unequal forces acting on the object in the same direction. This means that the net torque acting on the object is not equal to zero, which is the condition for rotational equilibrium. Therefore, the object will indeed rotate around its axis.

It is important to note that the point of rotation or axis of rotation can be anywhere on the object, not just at its origin. In this case, the object will rotate around its axis of rotation, which may be located away from its origin.

I hope this explanation helps to clarify the concept of torque and how it applies to this problem. If you have any further questions, please do not hesitate to ask. Keep exploring and challenging yourself with these types of problems, as they will help strengthen your understanding of physics.