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At a winter fair a 65.5-kg stunt man is shot from a horizontal cannon that rests at the edge of a frozen lake. The human projectile is cast onto the smooth ice, slides some distance, and grabs the end of a long rope whose other end is attached to a pivot that is firmly anchored to the ice. The rope initially lies perpendicular to the stunt man\'s line of motion, and when he grabs it, he starts sliding in circular motion about the pivot and continues to revolve until he comes to rest. A tensometer on the rope indicates a tension of 811 N at the beginning of the circular motion. With a coefficient of kinetic friction of 0.0453, how many revolutions does the stunt man make? Take g = 9.81 m/s2. Assume the rope supplies all the centripetal force.
A football kicker can give the ball an initial speed of 27 m/s. He is 53 m from the goalpost which has a crossbar 3.09 m high. What is the smallest angle of elevation that he can kick the football and score a field goal
A pilot of an air plane travelling at 130km/hr wants to drop food supplies on a patch of land 250m below. what is the initial vertical velocity when package is dropped
A thick, conducting, spherical shell of inner radiusa = 0.7 cm and outer radius b = 1.3 cm is uncharged. The shell surrounds a point charge +Q = 3.10×10-3 C at itscenter (see the figure). What is the surface charge residing on the inner surface oft..
You spray your sister with water from a garden hose. The water is supplied to the hose at a rate of 0.137 liters per second, At what speed does the water exit the nozzle
A uniform solid sphere rolls without slipping down a 19° inclined plane. What is the acceleration of the sphere's center of mass
find the potential difference VB - VA, using the blue path.
A straight object of length 2.7 cm lies along the central axis of a spherical mirror with focal length 8.5 cm. What is the length of its image in the mirror
A 2.85 kg bucket is attached to a disk-shaped pulley of radius 0.121 m and mass 0.742 kg. If the bucket is allowed to fall, (a) what is its linear acceleration? (b) What is the angular acceleration of the pulley?
A rectagular boat is overloaded so that the water level (in fresh wateer) is just one centimeter (1.0cm) below the top of the boat, what is combined mass of all the people and the boat combined
Explain qualitatively the following phenomena. At a certain momentum, the cross sections for p+_ neutron s(p+n) and p-_ proton s(p-p) interactions are equal, whereas s(K+n)=22mb and s(K-p)=55mb.
Since the circumference of a circle of radius r is 2p r, every time the center of mass moves a distance 2p r, the object rotates a full circle (2p radians). If this happens in a time T then. Combine these equations to find out an expression for ..
Whenever two Apollo astronauts were on the surface of the Moon, a third astronaut orbited the Moon. Determine the period of the orbit
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