When a 40N force, parallel to and directed up the incline, is applied to a block on a frictionless incline that is 30o above the
horizontal, the acceleration of the block is 2.0 m/s2, up the incline. Find the mass of the block.
2 answers:
Answer:
5.8 kg
Explanation:
We are given that
Force,F=40 N

Acceleration,a=
We have to find the mass of block.




Where



Answer:

Explanation:
GIVEN:
applied force up the inclined plane, 
angle of the plank from the horizontal, 
acceleration of the body up the plane, 
Now from the schematic we balance the forces:




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