Question

The force acting on the block of mass $1kg$ is given by $F=5-2t$ The frictional force acting on the block after time $t=2$ second will be :$(\mu =0.2)$

• A. $2N$
• B. $3N$
• C. $1N$
• D. $0$

Answer 1

The correct option is C $1N$

Given,

$t=2s$

$F=5-2t$

Therefore,

$=5-2\left(2\right)=5-4=1$

$\therefore F=1N$

Hence, this is the answer.