Answer :
so work done = mgh = 7×10×5 = 350 joules
so answer is 350 joules !!
so answer is 350 joules !!
Answer: The work done by the ramp against the force of gravity is -343 J
Explanation:
Work is defined as the force that is causing the movement or displacement of an object.
Mathematically,
[tex]W=F\times d[/tex]
We know that:
[tex]F=m\times g[/tex]
where,
W = work done by the ramp = ?
m = mass of the box = 7 kg
g = acceleration due to gravity = [tex]-9.8m/s^2[/tex] (Negative sign appears because it is acting against the gravity)
d = displacement = 5 m
Putting values in above equation, we get:
[tex]W=7kg\times (-9.8m/s^2)\times 5m\\\\W=-343J[/tex]
Hence, the work done by the ramp against the force of gravity is -343 J