Question

Three blocks A, B & C at masses 4kg, 2kg & 1kg
respectively are incontact on
a frictionless surface,
as shown. If a force of 14N is applied on the 4kg
block, then the
Contact force between A & B is.​

Answer 1

Explanation:

Based on maceral content and its appearance in a hand specimen, coal is classified into four principal types: clarain, durain, fusain, and vitrain. Coal may also be classified in grades using subjective terms (e.g., “low-sulfur coal,” “high-ash coal”) with reference to their impurities for commercial purposes.