If the fulcrum of a crowbar, of total length 200 cm, is at a distance of 150 cm from the effort., what is the mechanical advantage of the crowbar? *
3
0.33
1.33
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If the fulcrum of a crowbar, of total length 200 cm, is at a distance of 150 cm from the effort., what is the mechanical advantage of the crowbar? *
3
0.33
1.33
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Here the Concept of Mechanical Advantage has been used. We see that we are given the total length of the crowbar and length of its fulcrum. So firstly we can find out the length of load arm and from that we can find the length of effort arm. After finding these we can find its ratio to get the final answer.
Let's do it !!
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★ Formula Used :-
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★ Solution :-
Given,
» Total length of the crowbar = 200 cm
» Distance of fulcrum from the effort = 150 cm
From this, we get ::
Load Arm : It is the distance of the fulcrum from the effort. So here Load Arm will be 150 cm.
Effort Arm : It is the length of distance which is left after subtracting the load arm from the total length of crowbar. So here Effort Arm will (200 - 150) = 50 cm
Now we need to find the Mechanical Advantage. This is given as,
On applying the values, we get
So option b.) 0.33 is correct.
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★ More to know :-
• Mechanical Advantage : It is the ratio of force produced by the body to the force applied for the proper assessing of the machine. It can also be determined by the ratio of the length of the part where the effort is applied to the length of the part which has the load.
Verified answer
Answer:
3
Explanation:
MA=distance from effort/distance from load.
distance from effort=150
diatance from load=200-150=50