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During a jump to his partner, an aerialist is to make a triple somersault lasting a time of 1.87 sec. For the first and last quarter revolution, he is in the extended orientation shown, with a moment of inertia of 19.9 kgm2 around his center of gravity. During the rest of the flight he is in a moderate tuck, with a moment of inertia of 5.50kgm2.
a) Find his initial angular velocity around his centre of gravity?
b) If he now attempts a quadruple somersault, with the same angular velocity and time, by using a tighter tuck, find what must his moment of inertia be during the tuck?
a sample of an unknown material appears to weigh 280n in air and 175n when immersed in alcohol of specific gravity
A ranger in a national park is driving at 52 km/h when a deer jumps onto the road 86 m ahead of the vehicle. After a reaction time of t s, the ranger applies the brakes to produce an acceleration of -2.9 m/s2.
Two very long wires carrying a current I of 3.0 A out of the pageare at two of the corners of an equilateral triangle. The sides ofthe triangle are 1.0 m long. Find the direction and magnitude of the magnetic field at P, the third corner of the trian..
A small sphere of charge q1 = 0.848 µC hangs from the end of a spring as in figure (a). When another small sphere of charge q2 = ?0.594 µC is held beneath the first sphere as in figure (b), the spring stretches by d = 3.18 cm from its original length..
River Pascal with a volume flow rate of 5.5×105 joins with River Archimedes, which carries 1.10×106 , to form the Bernoulli River. The Bernoulli River is 140 wide and 10 deep. What is the speed of the water in the Bernoulli River?
After a tornado, a 0.55-g straw was found embedded 2.8 cm into the trunk of a tree. If the average force exerted on the straw by the tree was 70 N, what was speed of the straw when it hit the tree .
two resistors one of 5 ohms and the other of 3 ohms are connected in series to a 6v battery. a what is the resistance
How does graphene support Induced pluripotent stem cells culture and do different forms of graphene lead to distinct cell proliferation and differentiation characteristics
A window washer is standing on a scaffold supported by a vertical rope at each end. the scaffold weighs 200N and is 3.21 m long. assume the 900N worker stands 1.44 m from one end of the scaffold. what is the force on the rope farther from the work..
A 913-kg car starts from rest on a horizontal roadway and accelerates eastward for 5.00 s when it reaches a speed of 30.0 m/s. What is the average force exerted on the car during this time
Suppose that during the launch of a rocket from the surface of the earth, Determine the acceleration of the rocket
The supersonic aircraft Concorde has a length of 62.2m when sitting on the ground on a typical day when the temperature is 12.0 oC. What is the temperature of the Concorde's skin in flight
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