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Vika [28.1K]
3 years ago
5

Rita places a 2.5 kg block on a frictionless inclined plane that is 30 degrees above horizontal. She applies a horizontal force,

which keeps the block from moving up or down the inclined plane. What is the magnitude of the force Rita applies?​
Physics
1 answer:
vitfil [10]3 years ago
7 0

Answer:

14.2

Explanation:

find horizontal force of the weight = 2.5kg x 9.8 Sin30 = 12.3 N

to prevent the sliding she needs to pull horizontally

Fh = 12.3 /Cos 30 =14.2N

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