A body needs a force F, just to start motion on a
surface, a force F, to continue its motion and a
force Fz to roll on the surface. What is (i) the static
friction (ii) sliding friction and (iii) rolling
friction ? State whether F2 is equal, less than or
greater than (i) F, and (ii) F3.
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an organization of workers formed to protect the rights and interests of its members. : an act of joining two or more things together. : a group of states or nations that are ruled by one government or that agree to work together.
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