Physics, ramp , incline, intial speed, please help? - wood block is launched up a wooden ramp that is inclined at
A 2.0 kg block of wood was thrown through a wooden ramp that is inclined at an angle of 35 degrees. Initial velocity of the block is 10 m / s
Part A --
What is the height above the block to reach the starting point?
Express your answer to two significant figures.
Part B --
How soon must, if it slips to its starting point?
Express your answer to two significant figures.
Sunday, January 31, 2010
Wood Block Is Launched Up A Wooden Ramp That Is Inclined At Physics, Ramp , Incline, Intial Speed, Please Help?
1 comment:
The block has an initial speed of 10m / s in the direction of the ramp is inclined at 35 degrees, so he has the speed 10xsin [35] = 5735 m / s in vertical direction. The acceleration g = -9.8 m / s 2 ^ Select is v ^ 2 = u ^ 2 + 2AS where v is velocity (zero), the initial velocity u (5735), a is the acceleration (-9.8 (COS least his low)) and S is the distance (height ). So we've 2x9.8x height = 32,899, although they 1.68m high.
Assuming that is no energy losses (friction, for example), the kinetic energy is totally transformed into potential energy, then the same kinetic energy, so that the velocity at the end is the same, is at 10 m / s
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