Question

NUMERICAL
15. A 20kg block is originally at rest on a hori-
zontal surface for which u is 0.6. A hori-
zontal force Fis applied such that it var-
ies with time as shown. The speed of the
block after 10sec in m/s is(g=10 m/s2)
F(N)
limitafution
200
0
5
10
F​

Answer 1

Answer:

Block will move when. Fext becomes more than Fs(mₐₓ) = 0.6 × 20 × 10 = 120 N. This happens at time > 3s.

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