Mechanics > Statics of Rigid Bodies > Resolution of Forces

DCS# 1J30.10

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SUSPENDED BLOCK

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APPARATUS

hinged board	202-15-D
wooden block	202-15-D6
strip of 3/8" plywood	202-15-D6
pulley clamp	202-15-D6
pulley on rod	202-15-D6
C clamp	202-01-D5
string	202-02-C3
2 weight hangers	101-05-D1
set of weights	101-05-C
protractor	101-05-E2
ringstands, rods, right angle clamps	202

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DESCRIPTION

Block rests on inclined board.  Measure angle and calculate normal and frictional forces provided by board.  Use pulleys and hanging weights to replace normal and frictional force.  Remove board to show that block remains in place.

 

NOTES

 

Clamp board to cart by hinged piece of metal with strip of plywood under it.  Support with horizontal rod under lip.  Use long ringstand so that  weights that replace normal force clear the block.

Mass of block is 2.74 kg.

REFERENCE

The Physics Teacher, 17, 593 (Dec. 1979).