Question

1 A climber of mass 80 kg is on a steep rock face. The force X
that the rock exerts on the climber is at an angle of 50° to
the vertical. Y, the other force on the climber, keeps himin
equilibrium and is provided by a rope at an angle of 40° to the
vertical.
a) Draw a sketch to show the forces acting on the climber.
b) From your sketch of the forces, sketch a triangle of forces to
show equilibrium.
)Use your triangle of forces to find
1) X, the force the rock face exerts on the climber
i) Y, the force provided by the rope

Answer 1

a)



b)



1) X = 80 kg * 9.8 m/s^2 * sin(50°) = 745.6 N

ii) Y = 80 kg * 9.8 m/s^2 * sin(40°) = 645.6 N

Answer 2

1 A climber of mass 80 kg is on a steep rock face. The force X
that the rock exerts on the climber is at an angle of 50° to
the vertical. Y, the other force on the climber, keeps himin
equilibrium and is provided by a rope at an angle of 40° to the
vertical.
a) Draw a sketch to show the forces acting on the climber.
b) From your sketch of the forces, sketch a triangle of forces to
show equilibrium.
)Use your triangle of forces to find
1) X, the force the rock face exerts on the climber
i) Y, the force provided by the rope