3 years ago

Please help me will mark u brainiest

Physics

1 answer:

Vesnalui [34]3 years ago

8 0

Answer:

C. 2.5 N

Explanation:

The sum of downwards moments equals sum of moments upwards

<u>Downwards moments </u>

Moments= Force*distance

= [10/100 * 2 ] +[20/100*4]

=[0.1*2] +[0.2*4]

=[0.2+0.8]

= 1.0 N

Equate this answer to upward force ;

1.0 N = 0.4 *U

1/0.4 =U

2.5 N =U

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