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A simple Atwood’s machine uses a mass less pulley and two masses m1 and m2. Starting from rest, the speed of the two masses is 8.4 m/s at the end of 7.2 s. At that time, the kinetic energy of the system is 62 J and each mass has moved a distance of 30.24 m. Find the value of heavier mass. The accel- eration due to gravity is 9.81 m/s2 . Find the value of lighter mass
A racecar accelerates uniformly while starting from rest, find the total linear acceleration of a point on the outside of the tire when the car has traveled a distance of 200 m
A swimming pool has dimensions 32.0 m ? 12.0 m and a flat bottom. The pool is filled to a depth of 2.30 m with fresh water. What is the force exerted by the water on the bottom
A device used in radiation therapy for cancer contains 3.10×10-1 g of cobalt 2760Co (59.9333819 u). Determine the activity of the radioactive material
A 62.5 skier is moving at 6.00 on a frictionless, horizontal snow-covered plateau when she encounters a rough patch 3.10 long. How fast is the skier moving when she gets to the bottom of the hill
A 1N apple which is 5 m from the ground breaks from its stem and falls to the ground. When it has fallen a distance of 2 meters, calculate its mechanical energy relative to the ground
120 g ball moving to the right at 4.1m/sec catches up and collides with a 450 g ball that is moving to the right at 1.2 m/sec what is the speed of both balls after the collision?
A race car starts from rest on a circular track of radius 437 m. The car's speed increases at the constant rate of 0.560 m/s2. calculate the speed of the race car
A 750-N Marine in basic training climbs a 9.5-m vertical rope at a constant speed in 8.25 s. What is his power output
Deflection of the electron beam in a tube TV set is accomplished by magnetic forces. how far from the center of the screen does the beam strike
What is the magnification of an astronomical telescope whose objective lens has a focal length of 71 cm and whose eyepiece has a focal length of 2.1 cm
On a single, light, vertical cable that does not stretch, a crane is lifting a 1,207-kg Ferrari and, below it, a 1,461-kg BMW Z8. Find the tension in the cable above the Ferrari
A thin spherical shell of mass 0.25 kg and radius 0.15 m is released from rest from the top of a 3.0-m high ramp. What would the linear speed be at the bottom
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