A 12 kg object is at the top of a 41 degree inclined ramp. It is released and it reaches the bottom of the 85 m ramp in 2.3 seconds. what is the force of friction between the object and the ramp? What is the coefficient of friction?
Can someone help me with this question using force components? Thank you!
Acceleration of the object
from kinematics is
a=2•s/t^2=2•85/(2/3)^2=32.14 m/s^2
Acceleration of this object without friction fron Newton's 2 Law is
a=g•sinα=9.8•0.656=6.43 m/s^2
Therefore, it may be mistake in the given data
Check the data!