For a spring controlled Hartnell type governor, following data is provided:- - Mass of the governor ball = 1.80kg - Length of the vertical arm of bell crank lever = 8.75cm -
Length of the other arm of bell crank lever = 10cm -
The speeds corresponding to radii of rotations of 12 cm and 13 cm are 296 and 304 rpm respectively. - Determine the stiffness of the spring.
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Mumbai University > MECH > Sem 5 > Theory Of Machines 2

Marks: 7 M

Year: Dec 2014

Given

M = 1.8kg

A= 0.0875m

B = 0.1m

R1= 0.12m and N1 = 296 rpm

R2 = 0.13m and N2 = 304 rpm

K =?

Formula:

$K = 2(A/B)^2 \times (Fc1-Fc2)/(R1-R2)$

Solution

W1 = 105 x 296 = 31.08

W2 = 105 x 304 = 31.92

K $= 2(A/B)^2 …