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23 Nov 2019

12. There are two horizontal forces on the 4.0 kg box in theoverhead view of the figure below. The magnitude of the firstforces
is F1 = 20.0 N and that of the second force is F2 = 10.0 N. Whatwill be the acceleration of the box in unit vector
notation? [Answer: (2.5 i + 0.0 j)m/s2]

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Jarrod Robel
Jarrod RobelLv2
26 Aug 2019

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Related textbook solutions

Physics: Principles with Applications
7th Edition, 2013
Giancoli
ISBN: 9780321625922

Related questions

There are two horizontal forces on the 1.7 kg box in the overhead view of Fig. 5-38 but only one (of magnitude F1 = 24 N) is shown. The box moves along the x axis. For each of the following values for the acceleration ax of the box, find the second force, with sign indicating direction: (a) 14 m/s2, (b) 24 m/s2, (c) 0, (d) -14 m/s2, and (e) -24 m/s2.

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A horizontal force F1=75 N and a force F2=16.5 N, acting at an angle θ to the horizontal, are applied to a block of mass m=2.5 kg. The coefficient of kinetic friction between the block and the surface is μk=0.2. The block is moving to the right.

(a) Solve numerically for the magnitude of the normal force, FN in Newtons, that acts on the block if θ=30°.

(b) Solve numerically for the magnitude of the acceleration of the block, a in m/s2, if θ=30°.

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