Question

A nut which can be broken by applying a force of 40 Kgf is broken by using a nut cracker having its handle 20 cm long, by placing it at a distance 2 cm from the hinge. calculate the minimum force needed to break the nut .
(ans - 4kgf)

Answer 1

Answer:

4 kgf is the minimum force needed to break the nut.

Explanation:

We have,

• Load = 40 kgf
• Load arm = 2 cm
• Effort arm = 20 cm

To find,

• Effort

Solution,

>> By the principle of moments,

=> Load × Load arm = Effort × Effort arm

=> 40 kgf × 2cm = Effort × 20 cm

=> Effort = (40 × 2)/20

∴ Effort = 4 kgf.

Answer 2

Given : Load = 40kgf.

            Load arm = 2 cm.

            Effort arm = 20 cm.

To Find : Minimum force needed to break the nut.

Solution :

Load = 40kgf

Load arm = 2cm.

Effort arm = 20cm.

By the principle of moments,

Load × Load arm = Effort × Effort arm

40kgf × 2cm = Effort × 20 cm

Effort = (40 × 2)/20

Effort = 4kgf.

Thus, Effort of minimum force needed to break the nut is 4kgf .

Hence, Minimum force needed to break the nut is 4kgf.