GO During a jump to his partner, an aerialist is to make a quadruple somersault lasting a time t = 1.87 s. For the first and last quarter-revolution, he is in the extended orientation shown in Fig. 11-55, with rotational inertia I 1 = 19.9 kg·m 2 around his center of mass (the dot). During the rest of the flight he is in a light tuck, with rotational inertia I 2 = 3.93 kg·m 2 . What must be his angular speed ω 2 around his center of mass during the tuck? Figure 11-55 Problem 62.
GO During a jump to his partner, an aerialist is to make a quadruple somersault lasting a time t = 1.87 s. For the first and last quarter-revolution, he is in the extended orientation shown in Fig. 11-55, with rotational inertia I 1 = 19.9 kg·m 2 around his center of mass (the dot). During the rest of the flight he is in a light tuck, with rotational inertia I 2 = 3.93 kg·m 2 . What must be his angular speed ω 2 around his center of mass during the tuck? Figure 11-55 Problem 62.
GO During a jump to his partner, an aerialist is to make a quadruple somersault lasting a time t = 1.87 s. For the first and last quarter-revolution, he is in the extended orientation shown in Fig. 11-55, with rotational inertia I1 = 19.9 kg·m2 around his center of mass (the dot). During the rest of the flight he is in a light tuck, with rotational inertia I2 = 3.93 kg·m2. What must be his angular speed ω2 around his center of mass during the tuck?
3.63 • Leaping the River II. A physics professor did daredevil
stunts in his spare time. His last stunt was an attempt to jump across
a river on a motorcycle (Fig. P3.63). The takeoff ramp was inclined at
53.0°, the river was 40.0 m wide, and the far bank was 15.0 m lower
than the top of the ramp. The river itself was 100 m below the ramp.
Ignore air resistance. (a) What should his speed have been at the top of
the ramp to have just made it to the edge of the far bank? (b) If his speed
was only half the value found in part (a), where did he land?
Figure P3.63
53.0°
100 m
40.0 m→
15.0 m
Please solve and answer the question correctly please. Thank you!!
You throw a small rock straight up from the edge of a highway bridge that crosses a river. The rock passes you on its way down, 5.00 s after it was thrown. What is the speed of the rock just before it reaches the water 25.0 m below the point where the rock left your hand? Ignore air resistance.
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