I'm having trouble with this one. Any help would be appreciated.(adsbygoogle = window.adsbygoogle || []).push({});

A 3 m board of mass 4.5 kg is hinged at one end. A force F is applied vertically at the other end to lift a 75 kg block, which rests on the board 80 cm from the hinge, as shown in Figure 12-35.

(b) Find the force exerted by the hinge at this angle. (in components)

(c) Find the magnitude of the force F if this force is exerted perpendicular to the board when = 30°.

(d) Find the force exerted by the hinge in this case (in components)

**Physics Forums | Science Articles, Homework Help, Discussion**

Join Physics Forums Today!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

# Homework Help: Forces on a hinged board used as a lever

**Physics Forums | Science Articles, Homework Help, Discussion**