Advertisements
Advertisements
Question
Does the transfer of energy take place when you push a huge rock with all your might and fail to move it? Where is the energy you spend going?
Advertisements
Solution
- No, when we push a huge rock with all our strength but cannot move it, there is no transfer of energy.
- When we push the rock, our muscles tense and blood is displaced very rapidly to these muscles.
- These changes consume energy and we feel tired.
APPEARS IN
RELATED QUESTIONS
A body falls freely under gravity from rest. Name the kind of energy it will possess while falling.
State whether the object possess kinetic energy, potential energy, or both :
A stretched spring lying on the ground ____________.
Fill in the blank with suitable word :
The ability of a body to do work is called __________. The ability of a body to do work because of its motion is called __________.
A stone is thrown upwards as shown in the diagram. When it reaches P, which of the following has the greatest value of the stone?
Name the device which converts electrical energy into mechanical energy.
Name the device or machine which convert :
Chemical energy into kinetic energy (or mechanical energy).
What kind of energy transformation take place at a hydroelectric power station?
Name the energy transfers which occur when : there is a picture on a television screen
Name the energy transfers which occur when : a torch is on
When an object falls freely towards the earth, then its total energy :
