A 0.32 kg box of macaroni is held in place at the front of a 3.14 kg shopping cart only by the force of static friction as the shopping cart accelerates. Determine the minimum acceleration, in m/s 2, that the shopping cart must have if the box is to be kept from falling if the coefficient of static friction between the box and cart is 0.26.

Answer 1

forcefriction=weight
the normal force is mass*a
.32*a*.26=.32*9.8
almost four g's

Answer 2

u r retrd