Laws of Motion - Result Question 46

46. A 100N force acts horizontally on a block of 10kg placed on a horizontal rough surface of coefficient of friction μ=0.5. If the acceleration due to gravity (g) is taken as 10 ms2, the acceleration of the block (in ms2 ) is

(a) 2.5

(b) 10

(c) 5

(d) 7.5

[2002]

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Answer:

Correct Answer: 46. (c)

Solution:

(c) a=FμRm=1000.5×(10×10)10=5ms2



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