Class 3 Lever

Q.

State the characteristics of the first-class lever. Give one example of a first-class lever where the mechanical advantage is equal to 1.

Q.

A wheelbarrow is an example of a _________ class lever.

1. 1st

2. 2nd

3. 3rd

4. 4th

Q.

How are levers classified? Give two examples of each type.

Q.

Name the class to which the following levers belong:

(c) a nutcracker

Q.

Choose the odd one out. Give reasons for your choice.

Beam balance, handle of a hand pump, spade, and crowbar

Q.

Name the class to which the following levers belong:

(d) a pair of sugar tongs,

Q.

Which of the following is not a second-class lever?

1. wheelbarrow

2. nutcracker

3. lemon squeezer

4. forceps

Q.

Name the class to which the following levers belong:

(a) A pair of scissors

Q.

If the load is between the fulcrum and the effort, the lever belongs to _____.

1. Class I

2. Class II

3. Class III

4. Both A and B

Q.

Differentiate between

Second class and third class levers

Q.

State the kind of lever which always has the mechanical advantage less than 1.

1. LEVER I

2. LEVER II

3. LEVER III

4. Both B and C

Q.

Given the load$=420N$, Effort applied$=350N$. Find mechanical advantage (MA), also find the type of lever.

Q.

Given the load $260N$, the mechanical advantage is$10$. Find the effort applied and also find the type of lever.