Question

PLEASE HELP (100)

Answer 1

Answer:

The work done will be $W=55.27\: J$

Explanation:

The work equation is given by:

$W=F\cdot x$

Where:

F is the force due to gravity (weight = mg)

x is the length of the ramp (3 m)

Now, the force acting here is the component of weight in the ramp direction, so it will be:

$F_{x-direction}=mgsin(28)$

Therefore, the work done will be:

$W=mgsin(28)*3$

$W=4*9.81*sin(28)*3$

$W=55.27\: J$

I hope it helps you!