Under what conditions does force applied on a body cause it to rotate?

When a body is pivoted at a point and the force is applied on the body at a suitable point, it rotated the body about the axis passing through the pivot point. This is the turning effect of the force and the motion of the body is called rotational motion.

Can an object moving in a straight line have angular momentum?

How to find the angular momentum of an object moving in a straight line. People forget that an object moving in a straight line (having linear momentum) can have angular momentum. For example, let’s say we throw a ball at one end of a stick (see Figure 1). The stick can pivot around point O.

What produces rotation without translation define it?

Shivansh Patra answered this. This means that a couple force acting on a body makes it(the body) to rotate on its own place (imagine rotation of earth) without displacing the body from its initial position. Hence we can also conclude that the centre of mass of the body remains constant .

What force does not cause any torque?

Any force that is along a line which passes through the axis of rotation produces no torque. Note that torque is a vector quantity, and, like angular displacement, angular velocity, and angular acceleration, is in a direction perpendicular to the plane of rotation.

Is the force that produces rotation?

Torque is the force that causes objects to turn or rotate (i.e., the tendency of a force to rotate an object about an axis).

Under what conditions can a body be rotated?

Complete answer: 1. When there is a net torque acting upon it, a body rotates. We will have to provide a retarding torque to change the direction of rotation of a rotating body with a fixed axis that will eventually stop the rotation and start in the opposite direction. 2.

What happens when a force is applied on a rigid body?

When force is applied on a rigid body, there will be no change in the shape or size of the rigid body. In case of a non rigid body the force will distort shape or size or even change both size and shape of the body.

Is rotation necessary for angular momentum?

In physics, angular momentum (rarely, moment of momentum or rotational momentum) is the rotational equivalent of linear momentum. It is an important quantity in physics because it is a conserved quantity—the total angular momentum of a closed system remains constant….

How can an object have angular momentum if it is not rotating?

For it to have a non-zero angular momentum, its line of path is displaced from the axis about which the angular momentum is calculated. An object moving in a straight line that does not go through the axis of rotation has an angular position that changes with time. So, this object has an angular momentum.

Which force will make the rod rotate about the axle?

A torque is a special form of force that turns an axle in a given direction. Torque equals force times moment arm. Pushing on a rod that rotates an axle can create a torque on that axle. Likewise, a torque on an axle can result in a linear force at a radius from the center.

Can a single force rotate an object?

Yes, a single force can indeed cause the rotation of a body. Any force that is not directed through the center of mass of a given free body has the ability to cause it to be accelerated both in rotation and in translation.

What does it mean when a rod starts to rotate?

If the rod starts rotating about any other point (other than the COM) when a force is applied, it means that the center of mass must rotate about that point. However as we have said, the COM is supposed to show only translational motion and not rotational motion in an isolated and unhinged system.

Why must a torque be defined about a rotational axis?

Because all rotational motions have an axis of rotation, a torque must be defined about a rotational axis. A torque is a force applied to a point on an object about the axis of rotation.

What is the net torque acting on the rod?

The net torqueacting on the rod is a sum of the two torques:τ= τ+ τ FTmg10 The distribution of the massof a rod about an axis is more spread out when the axis is located at the edge ofthe rod than when it is located at the center of mass. table of rotational inertia

What is the distribution of the mass of a rod?

The distribution of the mass of a rod about an axis is more spread out when the axis is located at the edge of the rod than when it is located at the center of mass. away is: The equation, is the rotational equivalent of . Torque plays the role of force. Rotational inertia plays the role of mass.