Level:
Project ID:
9000150503
Accepted:
1
Clonable:
0
Easy:
0
A pendulum constituted of a rope of the length
\(l\) and a
body is displaced from it's equilibrium. The force due to gravity on the body
\(F_{g} = 20\, \mathrm{N}\). The body
is higher by \(h = 10\, \mathrm{cm}\)
in the displaced position (comparing to the equilibrium
position). The tension in the rope in the displaced position is
\(F_{1} = 12\, \mathrm{N}\). Find the length
of the rope \(l\). Hint: Using a parallelogram, the force of gravity on the body can be decomposed into a force
\(F_{1}\) in the direction
of the rope and \(F_{2}\)
in the perpendicular direction.
\(25\, \mathrm{cm}\)
\(25\, \mathrm{m}\)
\(6\, \mathrm{cm}\)
\(16\frac{2}
{3}\, \mathrm{cm}\)