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I need help with this i am lost

  • Thread starter bc33rocks
  • Start date
1.Sand from a stationary hopper falls on a mov-
ing conveyor belt at the rate of 4 kg/s, as
shown in the figure. The belt is supported by
frictionless rollers and moves at 1.07 m/s un-
der the action of a horizontal external force
supplied by the motor that drives the belt.
Find the sand’s rate of change of momen-
tum in the horizontal direction. Answer in
units of N.



2. i know the rate of change of momentum is equal to the force but i need help figuring out that i really just need help getting started



3.
 

LowlyPion

Homework Helper
3,079
4
1.Sand from a stationary hopper falls on a mov-
ing conveyor belt at the rate of 4 kg/s, as
shown in the figure. The belt is supported by
frictionless rollers and moves at 1.07 m/s un-
der the action of a horizontal external force
supplied by the motor that drives the belt.
Find the sand’s rate of change of momen-
tum in the horizontal direction. Answer in
units of N.

2. i know the rate of change of momentum is equal to the force but i need help figuring out that i really just need help getting started
3.


Welcome to PF.

Well what is the change in momentum?

Momentum after - momentum before? I can't see your picture, but I suppose it falls vertically. So the final speed in X is what? The initial speed in X is what and what is the rate of sand mass in 1 sec? ...
 

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