Question

An eskimois pulling a sledge of mass 15 kg across level snow with a horizontal force of 90 Nand the constant force of friction is 60 N. What is the acceleration of the sledge ?

Answer 1

Expression for acceleration:

$$\begin{gathered} a=\frac{F-f}{m} \\ Here, \\ Fisexternalforce \\ fisfrictionalforce \\ and \\ mismass \\ a=\frac{90-60}{15} \\ =2\mathrm{m}/{\mathrm{s}}^2 \end{gathered}$$