Question

plz explain the solution ......:......​

Answer 1

Answer:

90N

Explanation:

Taking the whole as a system (as every element has the same acceleration as all are the rigid bodies):

mass of system = 16kg

so,

net force = mass of system × acceleration

F-Mg = Ma

180-160 = 16 × a

=>a = 10/8 m/s². .......................(1)

Taking only the upper block as the system:

let us consider that the tension in the rod in contact with the upper block be T.

so,

net force = mass of block × acceleration

F-mg-T = ma

180-80-T = 8 × a

100-T = 8×10/8

=> T = 90N