- #1
skittlez411
- 15
- 0
force! help me please =)
It's moving day and you need to push a 100kg box up a 20 degree ramp into the truck. The coefficients of friction for the box on the ramp are Us=0.9 and Uk=0.6. Your largest pushing force is 1000N. Can you get the box into the truck without assistance if you get a running start at the ramp? If you stop on the ramp, will you be able to get the box moving again?
Fk=Ukmg
F=mgsin20
a) Fk=(0.6)(100)(9.8)
=588N
F=mgsin20
=335N
yes, my maximum pushing force is 1000N. 335N<1000N
b) Fs=Usmg
=882N
Yes. I will be able to get the box moving again because I have enough force to overcome the static force.
thank you!
Homework Statement
It's moving day and you need to push a 100kg box up a 20 degree ramp into the truck. The coefficients of friction for the box on the ramp are Us=0.9 and Uk=0.6. Your largest pushing force is 1000N. Can you get the box into the truck without assistance if you get a running start at the ramp? If you stop on the ramp, will you be able to get the box moving again?
Homework Equations
Fk=Ukmg
F=mgsin20
The Attempt at a Solution
a) Fk=(0.6)(100)(9.8)
=588N
F=mgsin20
=335N
yes, my maximum pushing force is 1000N. 335N<1000N
b) Fs=Usmg
=882N
Yes. I will be able to get the box moving again because I have enough force to overcome the static force.
thank you!