Question

A block A of mass 2 kg, kept on rough horizontal surface, is subjected to
force of 10 N and 30 N as shown in figure. Find the magnitude of
acceleration of block. (Given coefficient of friction = 0.5, take g = 10 ms^-2)
(a) 25 m/s2
(b)12.5 m/s?
(c) 15 m/s?
(d) 5 m/s?
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Answer 1

Answer:

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Answer 2

Explanation:

mg - umg = ma

2×10 -0.5×2×10 = 2×a

20-10=2a

10=2a

a=10÷2

a = 5 m/s