EBK CONCEPTUAL PHYSICAL SCIENCE
6th Edition
ISBN: 8220101459787
Author: Hewitt
Publisher: PEARSON
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Chapter 7, Problem 73E
To determine
Explain the formula f ∼ T
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CH
57. A 190-g block is launched by compressing a spring of constant
k = = 200 N/m by 15 cm. The spring is mounted horizontally,
and the surface directly under it is frictionless. But beyond the
equilibrium position of the spring end, the surface has frictional
coefficient μ = 0.27. This frictional surface extends 85 cm, fol-
lowed by a frictionless curved rise, as shown in Fig. 7.21. After
it's launched, where does the block finally come to rest? Measure
from the left end of the frictional zone.
Frictionless
μ = 0.27 Frictionless
FIGURE 7.21 Problem 57
3. (a) Show that the CM of a uniform thin rod
of length L and mass M is at its center
(b) Determine the CM of the rod assuming its linear
mass density 1 (its mass per unit length) varies
linearly from λ = λ at the left end to double that
0
value, λ = 2λ, at the right end.
y
0
·x-
dx
dm=λdx
x
+
Shrinking Loop. A circular loop of flexible iron wire has an initial circumference of 161 cm , but its circumference is decreasing at a constant rate of 15.0 cm/s due to a tangential pull on the wire. The loop is in a constant uniform magnetic field of magnitude 1.00 T , which is oriented perpendicular to the plane of the loop. Assume that you are facing the loop and that the magnetic field points into the loop. Find the magnitude of the emf E induced in the loop after exactly time 9.00 s has passed since the circumference of the loop started to decrease. please show all steps
Chapter 7 Solutions
EBK CONCEPTUAL PHYSICAL SCIENCE
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