Friction tutorial

Tutorial on Friction
(tentative)

Problem 1
What is the height h of the step so that the force P will role the
cylinder of weight 25kg over the step without impending slippage at
the point of contact A. Take the coefficient of friction to be equal to
0.3.
Problem 1

Problem 2
A 5 deg wedge is used to lift the 1000-lb cylinder as shown. If the
coefficient of friction is ¼ for all surfaces, determine the force P
required to move the wedge.

Problem 3
 A slender rod of length
L is lodged between
peg C and the vertical
wall and supports a
load P at end A.
Knowing that and
that the coefficient of
static friction is 0.20
at both B and C,
determine the range
of values of the ratio
L/a for which
equilibrium is
maintained.
13.633.46 ≤≤
a
L

Problem 4
The moveable bracket shown may be placed at any height on the 3-cm
diameter pipe. If the coefficient of friction between the pipe and bracket is
0.25, determine the minimum distance x at which the load can be supported.
Neglect the weight of the bracket.

Problem 5
 Two slender rods of negligible weight are pin-
connected at A and attached to the 18-lb
block B and the 80-lb block C as shown. The
coefficient of static friction is 0.55 between all
surfaces of contact. Determine the range of
values of P for which equilibrium is
maintained

Friction tutorial

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Friction tutorial