a 100kg box of dimension 50cm*50cm*50cm is in the back of a tray truck. The coefficients of friction between the box and the bed of the truck are Us=0.4 and Uk=0.2.
What is the maximum acceleration the truck can have without the box slipping?

Question

a 100kg box of dimension 50cm*50cm*50cm is in the back of a tray truck. The coefficients of friction between the box and the bed of the truck are Us=0.4 and Uk=0.2.
What is the maximum acceleration the truck can have without the box slipping?

anonymous · Answer

is it 392N?

turingtest · Answer

Newtons are not units of accceleration
how did you calculate this?

anonymous · Answer

ahhh oops. didn't read the question properly...
i did
110kg*-9.8m/s^2=-980N
then 0.4*-980N=-392N

anonymous · Answer

ok so is it 392m/s^2?
seems pretty fast...

anonymous · Answer

ohhh
actually is it
f=ma
392=100a
a=3.92m/s^2

ujjwal · Answer

yeah its 3.92 m/s^2..

anonymous · Answer

why should i trust you

ujjwal · Answer

ok don't trust me.. did i tell u to trust me..??? Btw the logic behind the qsn was so simple.. just equalising two forces, (frictional and the one required to produce acceleration) is the key to solution....

anonymous · Answer

lol just checking...yeh im just getting into this subject...it is very simple

anonymous · Answer

physics is one of those subjects where they don't always give you the answer to problems so    i like to just make sure...