Question

Solve this problem using the guess method.

Answer 1

Answer : Force of friction is 2.04N

Given that:

Force = 4N

Mass = 0.200kg

Force of friction ?

`\begin{gathered} F\text{ = ma} \\ \text{Make a the subject of the formula} \\ (f)/(m)\text{ = }(ma)/(m) \\ a\text{ = }(f)/(m) \\ a\text{ = }(4)/(0.200) \\ a=20m/s^2 \\ \text{Weight of the block} \\ W\text{ = mg} \\ W\text{ = 0.20 x 9.8 } \\ W\text{ = 1.96N} \\ \text{Force of friction = force applied - weight} \\ \text{Force of friction = }4\text{ - 1.96} \\ \text{Force of friction = 2.04N} \end{gathered}`