1) A 75 kg mass hanging
by a cord is held stationary midway between two supports, as shown.
2) A uniform beam of 25
kg rests on supports P and Q.
what force is exerted by
support Q on the beam?
3) A mass
suspended by a string is held 24o from the vertical by a force of 13.8 N as
shown . Find the mass.
4) The
diagram shows a horizontal beam of negligible mass. The wall exerts a 42.0 N
horizontal force on the lever. Find the weight of the load.
5) Two
cylindrical wheels of radii r1 = 30 cm and r2 = 50 cm are attached
to each other on an axle that passes through the center of each. Calculate the net
torque on the wheel due to the two forces.
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