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miss Akunina [59]
2 years ago
14

URGENT HELP !! The coefficients of static and kinetic frictions for plastic on wood are 0.53 and 0.40, respectively. How much ho

rizontal force would you need to apply to a 34.4 kg object to start it moving from rest?
Physics
1 answer:
IRISSAK [1]2 years ago
7 0

Answer:

43.83 N

Explanation:

Given that,

The mass of an object, m = 34.4 kg

The coefficients of static and kinetic frictions for plastic on wood are 0.53 and 0.40, respectively.

The force of static friction,

F_s=\mu_smg\\\\F_s=0.53\times 34.4\times 9.8\\\\F_s=178.67\ N

The force of kinetic friction,

F_k=\mu_kmg\\\\F_k=0.40\times 34.4\times 9.8\\\\F_k=134.84\ N

Net force acting on the object is :

F = 178.67-134.84

= 43.83  N

Hence, this is the required solution.

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Answer:

Displacement: 6.71 m, Direction: 63.4 degrees north of east

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In the attached image we can aprecciate each one of the movements of the parade. Let's say that the parade started from the origin (point (0,0)) then it moves to the east 4 blocks it means now the parade is located at point (4,0).

Then the parade went to the south three blocks, so it moves to the coordinate (4,-3). After this the parade went to the west one block so the new coordinate point is (3, -3).

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