GO In Fig. 37-28 a , particle P is to move parallel to the x ; and x' axes of reference frames S and S' , at a certain velocity relative to frame S . Frame S' is to move parallel to the x axis of frame S at Figure 37-28 Problem 62. velocity v . Figure 37-28 b gives the velocity u' of the particle relative to frame S' for a range of values for v . The vertical axis scale is set by u' a = −0.800 c . What value will u' have if (a) v = 0.80 c and (b) v → c ?
GO In Fig. 37-28 a , particle P is to move parallel to the x ; and x' axes of reference frames S and S' , at a certain velocity relative to frame S . Frame S' is to move parallel to the x axis of frame S at Figure 37-28 Problem 62. velocity v . Figure 37-28 b gives the velocity u' of the particle relative to frame S' for a range of values for v . The vertical axis scale is set by u' a = −0.800 c . What value will u' have if (a) v = 0.80 c and (b) v → c ?
GO In Fig. 37-28a, particle P is to move parallel to the x; and x' axes of reference frames S and S', at a certain velocity relative to frame S. Frame S' is to move parallel to the x axis of frame S at
Figure 37-28 Problem 62.
velocity v. Figure 37-28b gives the velocity u' of the particle relative to frame S' for a range of values for v. The vertical axis scale is set by u'a = −0.800c. What value will u' have if (a) v = 0.80c and (b) v → c?
A pendulum has a 0.4-m-long cord and is given a tangential velocity of 0.2 m/s toward the
vertical from a position 0 = 0.3 rad.
Part A
Determine the equation which describes the angular motion.
Express your answer in terms of the variable t. Express coefficients in radians to three significant figures.
ΜΕ ΑΣΦ
vec
(t)=0.3 cos (4.95t) + 0.101 sin (4.95t)
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Part A
■Review
The uniform 150-lb stone (rectangular block) is being turned over on its side by pulling the
vertical cable slowly upward until the stone begins to tip.
(Figure 1)
If it then falls freely (T = 0) from an essentially balanced at-rest position, determine the speed at which the corner A strikes the pad at B. The stone does not slip at its corner C as it falls. Suppose that height of the stone is
L = 1.2 ft.
Express your answer to three significant figures and include the appropriate units.
?
ft
VA 10.76
S
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Consider the circuit shown in the figure. The battery has emf ε = 69 volts and negligible internal resistance. The inductance is L = 0.4 H and the resistances are R 1 = 12 Ω and R 2 = 9.0 Ω. Initially the switch S is open and no currents flow. Then the switch is closed. After leaving the switch closed for a very long time, it is opened again. Just after it is opened, what is the current in R 1?
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