A block is pulled along a straight horizontal line

PHYSICS · Multi-part · A Level · Physics · Mechanics and materials · Mechanics and materials

Problem

A block is pulled along a straight horizontal line. The horizontal force acting on it is

12\,\text{N}

from

x = 0

x = 2\,\text{m}

and

4\,\text{N}

from

x = 2\,\text{m}

x = 5\,\text{m}

. (i) Calculate the total work done by the force from

x = 0

x = 5\,\text{m}

. (ii) Determine the average value of the force over this entire displacement.