A grocery cart is being pushed with a force of 450 N at an angle of 30 degrees to the horizontal. If the mass of the cart and the groceries is 42 kg:
a) Find force of friction if coefficient of friction is 0.6
b) Find acceleration of cart.
The Attempt at a Solution
I figured out part A and I got 3.8 X 10^2 N as force of friction.
For part B, I tried to find force applied.
Fa = 450 N X cos30 degrees
= 389.7 N
and then find net force:
Fnet = 389.7 - (3.8 X 10^2)
and then find acceleration:
a = 9.7 / 42
But the answer is wrong and I checked from my book. Can someone tell me if I am right on part B of this question. Thanks.