Question

A 15 kg mass is pulled along a table at a constant velocity by a 10 N force. Find theforce required to produce an acceleration of 5 m/s2.B

Answer 1

Given

m: mass

m = 15kg

F = 10N, constant velocity

Procedure

In the first scenario, the velocity is constant so the acceleration of the block is 0.

`\begin{gathered} F-F_f=0 \\ F-\mu_kN=0 \\ F_f=10N \end{gathered}`

Knowing the friction force we will calculate the force needed to move the block 5 m/s^2

The force required to produce an acceleration of 5 m/s2 is 85N