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A 12 kg monkey climbs up a massless rope that runs over a frictionless tree limb and back down to a 16 kg package on the ground (see the figure).
(a) What is the magnitude of the least acceleration the monkey must have if it is to lift the package off the ground? If, after the package has been lifted, the monkey stops its climb and holds onto the rope, what are
(b) the magnitude and the direction of the monkey's acceleration (choosing the positive direction up), and
(c) what is the tension in the rope?
A car traveling at a speed of 18 m/s crashes into a solid concrete wall. The driver has a mass of 90 kg. What is the change in momentum of the driver as he comes to a stop
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A vertical electric field of magnitude 2.00 × 104 N/C exists above the Earth's surface on a day when a thunderstorm is brewing. A car with a rectangular size of 6.00 m by 3.00 m is traveling along a roadway sloping downward at 10.0°. find the elec..
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