Question

a 50 kg crate is pushed by a 1n applied force and pulled by a rope with make 40 with the horizontal if the Lensim is 5n
A. find the normal force
B. Find friction force

Given.
Fa =1n
T=5n,40n of e
M=50 kg

Answer 1

A. Normal force:

$$N=mg-T\sin{40}$$

$$N=(50)(9.8)-5\sin{40}=487\ N$$

B. Friction force:

$$F_f=T\cos{40}-F_a$$

$$F_f=5\cos{40}-1=2.83\ N$$