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umka21 [38]
3 years ago
9

Could you help me with this question?

Physics
1 answer:
Scorpion4ik [409]3 years ago
7 0

Answer:

Magnitude of static friction force is 70 sin40° = 44.99 N.  

No, it is not necessary that it is maximum static friction.

Normal force is equal to 70 cos40° = 53.62 N.

Explanation:

We apply newton law of moton equation along the plane and perpendicular to plane;

Along the plane,

70 sin 40° = f_{r}  ---------------(1)

70 cos 40° = N --------------(2)

f_{r}_{max} = μN -----------------(3)

So, it depends on the value of μ that the friction is maximum or not .

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According to Newton's first law of motion, what is required to make an object slow down? Enter your answer in the space provided
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