- #1
Raye
- 1
- 0
Hi guys
can you help me with this question? any hint is helpful..
an object of weight of 10 kg is to be raised 2 m off ground. there's an inclined plane for it with a freely chosen angle. How much work must be applied for the plane with 0.5 friction when after 1 m , the object its max. velocity of 1 m/s reaches? (it starts moving from 0 m/s)
My theory: after 1m there'll be no acceleration, thus the work would be zero. everything regarding to 0 to 1 m work could be calculated by the work and energy law: W=K_2 - K_1
the energy in the end minus the initial energy: W: 1/2 m v^2-0 = 5 J
The F was originally the one without friction thus:
F: 5+(FN*0.5)
which is not correct since the result is 371.19
can you help me with this question? any hint is helpful..
an object of weight of 10 kg is to be raised 2 m off ground. there's an inclined plane for it with a freely chosen angle. How much work must be applied for the plane with 0.5 friction when after 1 m , the object its max. velocity of 1 m/s reaches? (it starts moving from 0 m/s)
My theory: after 1m there'll be no acceleration, thus the work would be zero. everything regarding to 0 to 1 m work could be calculated by the work and energy law: W=K_2 - K_1
the energy in the end minus the initial energy: W: 1/2 m v^2-0 = 5 J
The F was originally the one without friction thus:
F: 5+(FN*0.5)
which is not correct since the result is 371.19