Question

werd
Let the distance of 40 ker boy hom nierum
so ko. 2.3 m - 40 kur.
19
1. In operating a water pump, a resistance of 40 N is overcome by an effort of 12 N, If the distan
tulerum from the point where the resistance acts is 0.2 m, find the distance from the fulcrum, where
is applied
2. A uniform plank of a see-saw is 5 m long and supported at its centre. A boy weighing 40 kgf sits at
1.5 m from one end of the see-saw. Where must a girl weighing 25 kgf sit on the other end of the
as to balance the boy?
2. In the diagram shown calculate the resistance (R) offered by the nut when an effort of 30 N
20 cm
Solution
Load arm
5 cm.
Elfort arm - 2015 - 25 cm
Load - Load arm - Effort Effort arm
R 5 C11 - 30 N 25 (111
R 150 N.
Fig. 3.7
Practice Problems 2:
The handle of a nutcracker is 16 cm long and a nut is placed 2 cm from its hin​

Answer 1

Answer:

Let the distance of 40 ker boy hom nierum

so ko. 2.3 m - 40 kur.

19

1. In operating a water pump, a resistance of 40 N is overcome by an effort of 12 N, If the distan

tulerum from the point where the resistance acts is 0.2 m, find the distance from the fulcrum, where

is applied

2. A uniform plank of a see-saw is 5 m long and supported at its centre. A boy weighing 40 kgf sits at

1.5 m from one end of the see-saw. Where must a girl weighing 25 kgf sit on the other end of the

as to balance the boy?

2. In the diagram shown calculate the resistance (R) offered by the nut when an effort of 30 N

20 cm

Solution

Load arm

5 cm.

Elfort arm - 2015 - 25 cm

Load - Load arm - Effort Effort arm

R 5 C11 - 30 N 25 (111

R 150 N.

Fig. 3.7

Practice Problems 2:

The handle of a nutcracker is 16 cm long and a nut is placed 2 cm from its hin