Mechanical Advantage in Lever

Q.

A fire tongs has its arms 20 cm long. It is used to lift a coal of weight 1.5 kgf as shown in the figure below by applying an effort at distance 15 cm from the fulcrum. Find the mechanical advantage of fire tongs.

1. 75

2. 25

3. 0.75

4. 0.25

Q.

A fire tongs has its arms 20 cm long. It is used to lift a coal of weight 1.5 kgf by applying an effort at distance 15 cm from the fulcrum. Find the mechanical advantage of fire tongs.

1. 75

2. 0.75

3. 25

4. 0.25

Q.

The given figure shows a uniform metre rule of weight W supported on a fulcrum at the 60 cm mark by applying the effort E at the 90 cm mark.

Find the mechanical advantage of the lever.

1. $\frac{2}{3}$

2. $\frac{1}{3}$

3. 3

4. 2

Q.

The diagram shows the use of a lever. If FA = 10 cm, AB = 500 cm, calculate the minimum effort required to lift the load.

1. 1550 N

2. 2000 N

3. 2550 N

4. 5100 N

Q.

The given figure shows a weightless lever in equilibrium. Neglect friction at the fulcrum F.


Calculate the mechanical advantage for the given lever.

1. $\frac{Effortarm}{Loadarm}$

2. $\frac{loadarm}{Effortarm}$

3. $\frac{2\times Effortarm}{Loadarm}$

4. $\frac{Effortarm}{2\times Loadarm}$

Q.

When the effort arm is equal to the load arm the mechanical advantage is equal to one.

1. True

2. False

Q. Calculate the mechanical advantage of a lever in which the effort arm is 50 cm and the load arm is 2 cm ___.

1. 25
2. 100
3. 250
4. 10

Q.

Calculate the mechanical advantage of a lever in which the effort arm is 50 cm and the load arm is 2cm ___.

Q.

When the effort arm is greater than the load arm then mechanical advantage is greater than one.

1. False

2. True

Q.

A fire tongs has its arms 20 cm long. It is used to lift a coal of weight 1.5 kgf by applying an effort at distance 15 cm from the fulcrum. Find the mechanical advantage of fire tongs.

1. 0.25

2. 25

3. 75

4. 0.75