Physics
posted by Megan .
A block of mass 2.10 kg is pushed 2.33 m along a frictionless horizontal table by a constant 19.4 N force directed 27.5o below the horizontal. Determine the magnitude of the normal force exerted by the table.

A small block of mass m slides along the frictionless
looptheloop shown.
(a) If it starts from rest at P, what is the normal force
acting on it at Q?
(b) At what height above the bottom of the loop
should the block be released so that the force it
exerts against the track at the top of the loop is
equal to its weight?
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