PLEASE HELP! DUE TOMORROW! In a warehouse crates are placed at the top of a ramp and an employee has to
slowly (at a constant velocity) lower them down the ramp. Initially the crates are
stationary so the employee needs to start them moving by pulling on them and then
push with the appropriate force the allow them to continue moving at a constant
velocity. To do this they exert a horizontal force on the crate using a rigid pole. The
ramp is oriented at an angle of θ=35 degrees relative to the horizontal.
a) Since the crate is initially stationary, what is the coefficient of static friction
between the crate and ramp?
b) If the coefficient of kinetic friction is 0.20, once the crate starts moving, what force
does the employee need to exert to ensure that the crate moves at a constant
speed down the ramp?
1 answer
What is the mass of the crate?