Respuesta :
Answer:
W = 294 J
Explanation:
given,
mass of the projectile = 2 Kg
horizontal displacement = 20 m
vertical displacement = 15 m
work done by the gravitational force = ?
the work done by gravitational force only account for vertical motion.
force due to gravity = m g
= 2 x 9.8 = 19.6 N
work done is equal force x displacement
W = F x s
W = 19.6 x 15
W = 294 J
Answer:
W= - 300 J
Explanation:
Given that
Mass ,m= 2 kg
Horizontal distance ,x= 20 m
Vertical distance ,y= 15 m
As we know that gravity force always acts in the downward direction
F= m g
The displacement of the object is in upward direction
d= -15 m
The work done by a force given as
W= F.d
Now by putting the values
W= - 2 x 10 x 15 ( Take g= 10 m/s²)
W= - 20 x 15
W= - 300 J
Therefore the work done by gravitational force will be -300 J.
