2. M1 has a mass of 5Kg and a mass of 20Kg M2 , assuming no friction or friction

Question

2. M1 has a mass of 5Kg and a mass of 20Kg M2 , assuming no friction or frictional component determines the weight of the mass m1 along the inclined plane having an angle of 30o . ( G = 9.8 m / s2 )

A) 20 N

B)5 N

C)24.5 N

D)49 N

E)42.43

3. a book with the cover forming a 30 ° angle with the horizontal and on which a metal coin with a constant speed slides . What is the coefficient of kinetic friction ? A)0.50 B)0.80 C)1.00 D)0.30 E)0.58 4. A girl sliding down a jabot. Indicate the correct expression in the following sentences .

A) The friction force is directed upwards jabot and girl slides down the jabot

b) The friction force is directed downward jabot like slipping girl is down jabot .

c) The friction force is directed perpendicular to the sliding of the girl who is down the jabot.

d) The friction force does not arise in this type of movement when the girl slides down the jabot .

Explanation / Answer

SOLUTION:

1. C)

2. B) 0.8

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