Physics, 25.09.2019 18:30 tiwaribianca475
A7.5-kg block is sliding down a wall with constant velocity. the coefficient of static friction between the block and the wall is ? s = 0.70. the coefficient of kinetic friction between the block and the wall is ? k = 0.40. what is the magnitude of the force (in n) pressing the block against the wall? use g = 9.79 m/s2. never include units with any answer to a numerical question.
Answers: 1
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Asolid cylinder and a cylindrical shell have the same mass, same radius, and turn on frictionless, horizontal axles. the cylindrical shell has light-weight spokes connecting the shell to the axle. a rope is wrapped around each cylinder and tied to blocks of equal masses that are held the same height above the ground. both blocks are released simultaneously. the ropes do not slip. which block hits the ground first? or is it a tie?
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Physics, 22.06.2019 22:00
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A7.5-kg block is sliding down a wall with constant velocity. the coefficient of static friction betw...
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