(a) A force F pushes on a 25kg box as shown in the figure. The coefficient of static friction between F 25 kg box and indine is Hs = 0.20. How large a horizontal force must push on the block if the 40°. block is to be on the verge of sliding up the incline? 40° (b) A force F applied to an object of mass m produces an acceleration of 3 m/s?. The same force applied to a second object of mass m2 produces an acceleration of 1 m/s?. If mi and m2 are combined, find their acceleration under the acdtion of the force F?
(a) A force F pushes on a 25kg box as shown in the figure. The coefficient of static friction between F 25 kg box and indine is Hs = 0.20. How large a horizontal force must push on the block if the 40°. block is to be on the verge of sliding up the incline? 40° (b) A force F applied to an object of mass m produces an acceleration of 3 m/s?. The same force applied to a second object of mass m2 produces an acceleration of 1 m/s?. If mi and m2 are combined, find their acceleration under the acdtion of the force F?
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Transcribed Image Text:(a) A force F pushes on a 25kg box as shown in the
figure. The coefficient of static friction between
F
25 kg
box and indine is Hs = 0.20. How large a
horizontal force must push on the block if the
40°.
block is to be on the verge of sliding up the
incline?
40°
(b) A force F applied to an object of mass m
produces an acceleration of 3 m/s?. The same
force applied to a second object of mass m2 produces an acceleration of 1 m/s?. If mi and m2 are combined, find
their acceleration under the acdtion of the force F?
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