Question

a block of mass 4 kg is resting on rough horizontal plane is about to move when a horizontal force of 30N is applied on it if g=10m/s^2
find the total contact force exerted by the plane on the block
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Answer 1

Answer:

F=70N

Explanation:

F=m×a

=4×10

=40N+horizontal force

=40N+30N

=70N

Answer 2

Answer:

here u go

Explanation:

F= mg + horizontal force                                                                                              = 4*10+30=40+30=70N