If a body is moving in a straight line and no external torque acts on it, what c
Practice Questions
Q1
If a body is moving in a straight line and no external torque acts on it, what can be said about its angular momentum?
It is zero
It is constant
It increases
It decreases
Questions & Step-by-Step Solutions
If a body is moving in a straight line and no external torque acts on it, what can be said about its angular momentum?
Step 1: Understand what angular momentum is. It is a measure of how much motion an object has when it is rotating or moving in a circular path.
Step 2: Know that torque is a force that causes an object to rotate. If no external torque is acting on the body, it means there are no outside forces trying to change its rotation.
Step 3: Remember the principle of conservation of angular momentum. This principle states that if no external torque acts on a system, its angular momentum will not change.
Step 4: Conclude that since there is no external torque acting on the body, its angular momentum must remain constant.
Angular Momentum Conservation – Angular momentum of a body remains constant in the absence of external torque, reflecting the principle of conservation of angular momentum.
