Mechanical Engineering - Machine Design - Discussion
Discussion Forum : Machine Design - Section 1 (Q.No. 9)
9.
The application of third type levers is found in
Discussion:
14 comments Page 1 of 2.
Adesh said:
1 year ago
Thanks all for explaining the answer.
Humayoun said:
3 years ago
Pair of tongs is of first type lever in which fulcrum is between load and effort.
(2)
Madhu Palleti said:
3 years ago
Answer is Tong because if you take sugar tong the effort is applied at middle of load and fulcrum.
Whereas in loaded safety valve the applied at one end of the lever which is next to the load (Loaded with spring) and another end is pivoted. So safety valve comes under 2nd type lever.
Whereas in loaded safety valve the applied at one end of the lever which is next to the load (Loaded with spring) and another end is pivoted. So safety valve comes under 2nd type lever.
(1)
Soustabh said:
4 years ago
Tong is not Third class lever.
Reddy said:
7 years ago
Answer 'C' is correct, agree @Akash.
(1)
Akash said:
8 years ago
Answer is C (in safety valve effort is at mid of load and hinge).
(1)
Shubham gupta said:
9 years ago
There are two types of tongs one comes under type 1 and other one comes under type 3. If load is applied in between fulcrum and resistance then that type of tong is type 3 tong and if fulcrum is in between effort and resistance then it is of type 1 (scissors is the similer example of type 1 tong).
(1)
Bhanu Teja said:
9 years ago
The 3rd class lever means pivot at the end, load at other end and effort is in the middle. For example, our human arm. Bicep is effort palm is where you take the load.
(1)
Jeeve said:
9 years ago
If it is sugar tongs the answer given above is correct.
For welding tongs it would be Type 1.
For welding tongs it would be Type 1.
(1)
Pinninti said:
10 years ago
A pair of tongs comes under the first type, because fulcrum is at middle, load and efforts are either end. Depending upon its design its mechanical advantage varies from <1 to >1.
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