mg 10 1. The application of a horizontal force Fp results in a block of mass m moving at constant speed up a frictionless incline (making an angle 6
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mg
10
1. The application of a horizontal force Fp results in a block of mass m moving at constant
speed up a frictionless incline (making an angle 6 with the horizontal) for a distance As.
(a) How much work does the normal force do? (b) How much work does the force Fp do in
terms of m, g, 8, and As? (e) Which force lifts the block vertically?
FIG. 1. Mass and spring system.
2. A mass (m = 0.8 kg) is pressed down on a vertical spring (k = 100 N/m) until the
spring compresses by d = 0.15 m from its non-perturbed length. The block is then released
from rest and allowed to ascend. The block is not connected to the end of the spring so it
may rise as depicted in the figure. Does the block, in fact, rise above the end of the spring?
If so, by how much distance?

Top Answer

1 .- ( a ) The work done by the normal force is: 0 J ( b ) The work... View the full answer

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