two difference of work done against friction and work done against gravity
Answers
Answer: if there is not motion produced in body, the works become zero. We can do work against gravity or against friction. when we lift something then it is work done against gravity and when we slide something then it is work done against friction..
Answer: Force against gravity: 1, the work done in the opposite force of gravity is called force against gravity.
2, For example, pulling a bucket of water from a well, lifting any object from the ground, walking uphill, etc. are work done against gravity
Force done against friction : 1, The work done by pushing or pulling a body over the surface of another body is called work done against friction.
2, For example; walking, cycling, pushing cart, walking with heavy load, etc.
Explanation:Earth attracts every object toward its centre.
This force of attraction is called gravity. When
we lift any abject from the surface of earth, we
apply force against the gravity. This work is
called work done against gravity.
When an object is pulled or pushed with a force is produced in the opposite direction. This opposing force is called friction. The work done by pulling or pushing a body over the surface of another body is called work done against friction. For example; walking, cycling, pushing cart, walking with heavy load, etc.