The coefficient of kinetic friction between a large box and the floor is 0.21. A person pushes
horizontally on the box with a force of 165 N for a distance of 2.8 m. If the mass of the box is
72 kg, what is the total work done on the box? (Round your answer to a whole number)
Answers
Explanation:
When power is taken away from the Central and State governments, and given to the Local governments, it is called decentralisation.
(i) The basic idea behind decentralisation is that there are a large number of problems and issues which are best settled at the local level. People have a better knowledge of problems in their localities. They also have better ideas on where to spend money, and how to manage things more efficiently.
(ii) At the local level, it is possible for the people to directly participate in decision, making. This helps to inculcate a habit of democratic participation. Basically the local government is the best way to realise one important principle of democracy, namely the Local Self-Government.
Given:
Coefficient of kinetic friction = 0.21
Force applied = 165 N
Distance = 2.8m
Mass of the box = 72 kg
To find:
Total work done on the box.
Solution:
Force = coefficient of kinetic friction * mass of body * acceleration due to gravity
F = u*m*g = 165N , which is given in the question.
Work done = Force * distance covered
W = 165 * 2.8
W = 462 J
Therefore, the total work work done on the box will be 462 J.