1.

A 5-kg concrete block is lowered with a downward acceleration of 2.8m/s2 by means of a rope. The force of the block on the rope is

Answer»

Consider all the forces along the x- axis:

Fx = ma - mg

Fx = m*(a-g)

Fx = 5 *(2.8-9.8)

Fx = 35 N down



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