Cars & bikes - diesel/petrol engines
Air conditioner
Refrigerator
Computer CPU / laptop
Blenders
Work done by gravity = 23,520 J = mgh. Therefore m= 23520/ 30 x 9.8 = 80 kg.
To solve this problem it is necessary to apply the concepts related to energy conservation. Therefore, the work done will initially be equivalent to the change in kinematic energy. And this kinematic energy will be equivalent to the sum of energy (work) carried out by force and friction. In this way we have to
Now,
For each one we have
Then at the equation of equilibrium of energy we have,
Therefore the work done by friction on the chair is -833.7J
Answer:
True.
Explanation:
There are many material removal processes that are used in the manufacturing of gears, shafts etc. These processes removes the extra excess material to make the product of desired symmetry or shape.