Question

р
A
B
P.
Block A weighs 4 N and Block B weighs 8 N. The coefficient of sliding friction
between all surfaces in contact is 0.25. Find the force P necessary to drag Block B
to the left at a constant speed
(1) if A rests on B and moves with it
(ii) if A is held at rest and
(ii) if A and B are connected by a light flexible cord passing around a fixed
frictionless pulley.​

Answer 1

Answer:

yjnjujikk sorry i cannot understand