To solve this problem we need to use the equations related to Elastic Potential Energy, which allows us to know the Energy stored in a spring based on its elastic constant and its respective compression. By definition it is described as
Where,
k = Spring constant
x = Displacement
Our values are given as
As we do not know the spring constant but if the energy stored at the compression given then,
In the case of the second compression and understanding that the spring constant is intrinsic to the internal force of the spring, then
Replacing,
Therefore the elastic potential energy in the spring at this elongation is 45J
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The effective force is the horizontal component of tension T. The tension, by similar triangles, has as adjacent side that is the effective force. Hence, we conclude:
Answer:
d=16537m
Explanation:
The energy kinetic of the motion and the work of the friction determinate the length of the ramp
Kinetic energy
Work friction
Answer:B
Explanation:
Calculate speed using equation:V=S/t
S=980 km ------------ distance Boston-Detroit
t=2h --------------------- time
v=?
------------------------
V=S/t
V=980km/2h
V=490km/h
Answer:
Explanation:
From the question we are told that
Mass of first team man
Force of man first team man
Mass of second team man
Force of man second team man
Generally the equation for net force F_n is mathematically given by
Therefore the acceleration is given by