Torque means the turning effect and we need to use this to understand rotational motion. To put any body in rotational motion, we not only need to apply the force and we also need to apply the force on the body but it shall be away from the axis of rotation. If a force is applied on the axis of rotation, it cannot produce rotational motion in the body. Torque is defined as the cross product of force and displacement. It means torque is the vector product of force and displacement and we do get the result also a vector quantity having both magnitude and direction.

When we find the cross product of force and displacement, we get it as the product of force and perpendicular distance of the point of action of force from the axis of rotation.

We shall apply torque on any body to put it in rotational motion. As the applied force produce displacement and give translatory motion in the body, applied torque on the body produces rotational motion in the body.

We do provide handle to a door at the edge of the door quite far from axis of rotation. This provides more distance to the applied force on the door and hence provides more torque on the body. This makes opening the door easy task. That is the reason why we always see the opening handler of door is always at the edge of the door never at the starting point from the axis of rotation.

This is explained in detail in the video below.

**Finding the direction of Torque**

**Related Posts**

## No comments:

## Post a Comment