Question

A constant horizontal force of 5.2 newtons is applied to a wooden block to slide it at constant speed across a wooden table. Calculate the weight of the block

7 N
14 N
34 N
17 N

Answer 1

Answer: 17N

Step-by-step explanation:

F(applied)-F(friction)=0

F(applied)=F(friction)

F(applied)= μmg

According to the reference table wood against wood is 0.3

So:

5.2N=0.3mg

17=mg

17=weight

Answer 2

Not enough information.

Step-by-step explanation:

∑F=ma

Fa-Ff=0

Fa=Ff

Fa=μN

N=Fa/μ

You don't have enough information, you need the frictional coefficient.