Answer:
a. Effort = 960 Newton
b. Mechanical advantage (M.A) = 0.625
c. Velocity ratio (V.R) = 1.67
Explanation:
Given the following data;
Load = 600 N
Length of crowbar = 200 cm
Length of load arm = 0.75 m
Conversion:
100 cm = 1 m
X cm = 0.75 m
Cross-multiplying, we have;
X = 0.75 * 100 = 75 cm
First of all, we would find the effort arm;
Effort arm = length of crow bar - length of load arm
Effort arm = 200 - 75
Effort arm = 125 cm
Next, we would determine the mechanical advantage (M.A) of the crow bar;
Substituting the values into the formula, we have;
M.A = 0.625
To find the effort of the crow bar;
Making "effort" the subject of formula, we have;
Effort = 960 Newton
Lastly, we would determine the velocity ratio (V.R);
V.R = 1.67
