1. A solid spherical ball of mass 2.88 kg and radius 0.14 m rolls along a smooth
ID: 1377825 • Letter: 1
Question
1. A solid spherical ball of mass 2.88 kg and radius 0.14 m rolls along a smooth, level surface with a speed of 2 m/s. The ball rolls up an inclined plane. How far up the plane does the ball go? Express your answer as the vertical height from the level surface.
2.An object of mass 129.491732 g executes SHM with an amplitude of 16.320139 cm and a period 20.354329 s. Find the force acting on the object at time 1.481049 s.
3.Spark plugs should be tightened to a specified torque of 13.8Nm. You have a wrench that is 0.25 m long, but because of the tightness of the space you can't pull the wrench at a ninety degree angle. You must pull at an angle of 40.91 degrees, measured from the handle of the wrench. What force must you exert on the wrench?
Explanation / Answer
Answer 1
conserving energy
0.5*4=gh
h=0.204m
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