# Physics

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Engineering 100
Homework Problem #1
Below is a diagram of a beam supported on the left end by a pin connection, and toward the right side
by a simple fulcrum. A force F is applied to the far right end of the beam as shown. The uniform beam
has mass, m, length, l, and the distance from the left end to the fulcrum is d. Do the following:
1. Find the reaction forces at the pin and fulcrum in terms of F, m, l, d, and g, the
acceleration due to gravity.
2. Given m = 10 kg, l = 2m, d = 1.5m, and g = 9.81 m/s
2
, find F such that the reaction force
at the pin connection is zero.

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