68P. A 5.00 kg block is pulled along a horizontal frictionless floor by a cord that exerts a force F= 12.ON at an angle 6= 25.0 above the horizontal, as shown in Fig. 5-57. (a) What is the acceleration of the block? (b) The force F is slowly increased. What is its value just before the block is lifted (completely) off the floor? (c) What is the acceleration of the block just before it is lifted (completely) off the floor? %3D 5.00 25.0 kg

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68P. A 5.00 kg block is pulled along a horizontal frictionless
floor by a cord that exerts a force F= 12.ON at an angle 6=
25.0 above the horizontal, as shown in Fig. 5-57. (a) What is the
acceleration of the block? (b) The force F is slowly increased.
What is its value just before the block is lifted (completely) off
the floor? (c) What is the acceleration of the block just before it is
lifted (completely) off the floor?
%3D
5.00
25.0
kg
Transcribed Image Text:68P. A 5.00 kg block is pulled along a horizontal frictionless floor by a cord that exerts a force F= 12.ON at an angle 6= 25.0 above the horizontal, as shown in Fig. 5-57. (a) What is the acceleration of the block? (b) The force F is slowly increased. What is its value just before the block is lifted (completely) off the floor? (c) What is the acceleration of the block just before it is lifted (completely) off the floor? %3D 5.00 25.0 kg
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