Question

When a 40-N force, parallel to the incline and directed up the incline, is applied to a crate on a frictionless incline that is 30°above the horizontal, the acceleration of the crate is 2.0 m/s2, up the incline. The mass of the crate is:
A) 3.8 kg
B) 4.1 kg
C) 5.8 kg
D) 6.2 kg
E) 10 kg

Answer

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