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you observe a 20 kg particle moving at a constant speed of 39 ms in a clockwise direction around a circle of radius 40
a car is designed to get its energy from a rotating flywheel with a radius of 225 m and a mass of 550 kg the flywheel
a hollow thin-walled cylinder and a solid sphere start from rest and roll without slipping down an inclined plane of
when an 783-kg adult uses a spiral staircase to climb to the second floor of his house his gravitational potential
the drawing shows a skateboarder moving at 787 ms along a horizontal section of a track that is slanted upward by 492
a soccer ball which has a circumference of 700 rolls 110 in 330 what was the average angular speed of the ball during
a 20-kg sled is being pulled along the horizontal snow-covered ground by a horizontal force of 35 n starting from rest
a firefighter mounts the nozzle of his fire hose a distance 305 m away from the edge of a burning building so that it
a 10 kg sled slides down a snowy hill at position a it is moving at 100 ms when it reaches position b it is moving at 3
a 100 kg scaffold is 58 m long it is hanging with two wires one from each end a 480 kg box sits 14 m from the left end
a cylindrical resistor of radius 42 mm and length 24 cm is made of material that has a resistivity of 350times10-5 m
a person pushes a 162-kg shopping cart at a constant velocity for a distance of 275 m on a flat horizontal surface she
a crate on a motorized cart starts from rest and moves with a constant eastward acceleration of a 250ms2 a worker
a string with a mass m 600 g and a length l 800 m has one end attached to a wall the other end is draped over a small
a very long cylinder with radius 554 cm has a uniform density of charges throughout it if the charge density in the
the heels on a pair of womens shoes have radii of 054 cm at the bottom if 28 of the weight of a woman weighing 524 n is
a cylindrical capacitor is 0047 m long and has a cylindrical core with a radius of 0025 mm and a cylindrical metal
a thin spherical shell rolls down an incline without slipping if the linear acceleration of the center of mass of the
equipment to be used in airplanes or spacecraft is often subjectedto a shake test to be sure it can withstand the
a basketball rolls without slipping down an incline of angle the coefficient of static friction is s model the ball as
a hand-pumped water gun is held level at a height of 065 m above the ground and fired the water stream from the gun
a length of rope is wrapped around a spool of weight w with inner radius r and outer radius r the rope is pulled with a
a particular satellite was placed in a circular orbit about 160 mi above eartha determine the orbital speed of the
a window washer pulls herself upward using the bucket-pulley apparatus shown in fig 4-42 the mass of the person plus
a 280 kg block is connected to an empty 100 kg bucket by a cord running over a frictionless pulley fig 4-57 the