Question

融融

靜力學求解

3/39 The exercise machine is designed with a light-
weight cart which is mounted on small rollers so that it
is free to move along the inclined ramp. Two cables are
attached to the cart-one for each hand. If the hands are
together so that the cables are parallel, determine the
force P which each hand must exert on its cable in order
to maintain an equilibrium position. The mass of the per-
son is 70 kg, the ramp angle 8 is 15°, and the angle ß is
18°. In addition, calculate the force R which the ramp
exerts on the cart.
3
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