Science

Conservative forces (like gravity or spring force) conserve mechanical energy and do not depend on the path taken. The work done by the conservative forces is recoverable.
Non-conservative forces (like friction or air resistance) dissipate energy as heat or sound. It depends on the path. When non-conservative forces act, mechanical energy is not conserved.

Energy is measured in joules (J). It is the capacity to do work while power is the rate of using energy or doing work. Power is measured in watts (W). One watt equals one joule per second. Power talks about how fast the work is done, and energy is about how much work is possible. 

NCERT Environmental Chemistry short questions and answers are provided in this artciles. These types of questions help in boosting the marks.

Yes, Class 11 Chemistry Environmental Chemistry notes are benefical in quick revision. Environmental Chemistry notes must consist of detailed explanation of topics, formulas, diagrams and reactions. 

With the help of subject experts at Shiksha we have provided the NCERT solutions for environmental chmistry class 11 with explanation through this article.

Students can use the Class 11 Chemistry hydrocarbons shorts notes and question for quick resion and self assessment. After self assessment, it become easy to identify the weaker topics.

When without slipping a body rotates and translates simultaneously is called rolling motion, such as a wheel on a road. It is the combination of rotatory and translatory motion. The point of contact has zero velocity relative to the surface in pure rolling. It is a condition in which there is no slipping or sliding during rolling.

According to the Class 11 Physics Chapter 6 System of Particles and Rotational Motion, for a rigid body to be in complete equilibrium, two conditions should be met:

• Net external torque = 0 (rotational equilibrium)
• Net external force = 0 (translational equilibrium)

The condition for equilibrium in rotational motion ensures that the body is not rotating or accelerating linearly. It is important in engineering and static structures to maintain stability like buildings or bridges.