Home
Class 10
PHYSICS
A nut which can be broken by applying a ...

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.

Text Solution

AI Generated Solution

To solve the problem, we will use the principle of moments, which states that the moment (or torque) about a pivot point (hinge) is equal for both the load and the effort applied. ### Step-by-Step Solution: 1. **Identify the Given Values:** - Force required to break the nut (Load, \( F_L \)) = 40 kgf - Length of the nutcracker handle (Total length, \( L \)) = 20 cm - Distance from hinge to the load (Load arm, \( d_L \)) = 2 cm ...
Promotional Banner

Topper's Solved these Questions

  • MACHINES

    ICSE|Exercise EXERCISE-3(A)|40 Videos
  • MACHINES

    ICSE|Exercise EXERCISE-3(A) MULTIPLE CHOICE TYPE|5 Videos
  • HOUSEHOLD CIRCUITS

    ICSE|Exercise EXERCISE -9(B) (MULTIPLE CHOICE TYPE)|2 Videos
  • QUESTION PAPER 2022 TERM 1

    ICSE|Exercise MULTIPLE CHOICE QUESTIONS|40 Videos

Similar Questions

Explore conceptually related problems

A gramophone disc rotates at 60 rpm . A coin of mass 18 g is placed at a distance of 8 cm from the centre . Calculate centrifugal force on the coin . Take pi^(2) = 9. 87 .

A mechanic can open a nut by applying a force of 150N while using a lever handle of length 40cm. How long a handle is required if he wants to open it by applying a force of only 50 N?

A nut is opened by a wrench of length 20 cm. If the least force required is 2 N, find the moment of force needed to loosen the nut.

A nut is opened by a wrench of length 20 cm. If the least force required is 2 N, find the moment of force needed to loosen the nut.

A pair of scissors is used to cut a piece of cloth by keeping it at a distance of 8.0 cm from its rivet and applying an effort of 10 kgf by fingers at a distance of 2.0 cm from the rivet. (a) Find : (i) the mechanical advantage of the scissors, and (ii) the load offered by the cloth. (b) How does the pair of scissors atc : as a force multiplier or as a speed multiplier ?

The size of the image of an object, which is at infinity, as formed by a convex lens of focal length 30 cm is 2 cm. If a concave lens of focal length 20 cm is placed between the convax lens and the image at a distance of 26 cm from the convex lens, calculate the new size of the image.

A spanner is used to unscrew a nut. A force of 40 N is applied to the end of the spanner, which is 10 cm away from the centre of the nut. Calculate the moment of force when the spanner is horizontal.

A force of 5 kgf is required to cut a metal sheet. A pair of shears used for cutting the metal sheet has its blades 5 cm long, while its handles are 10 cm long. What effort is needed to cut the sheet ?

A 4 m long rod of negligible weight is supported at a point 125 cm from its one end and a load of 18 kgf is suspened at a point 60 cm from the support on the shorter arm. (a) If a weight W is placed at a distance 250 cm from the support on the longer arm to balance the rod, find W. (b) If a weight 5 kgf is kept to balance the rod, find its position. (c) To which class of lever does it belong ?

An eye can distinguish between two points of an object if they are separated by more than 0.22 mm when the object is placed at 25 cm from the eye. The object is now seen by a compound microscope having a 20 D objective and 10 D eyepiece separated by a distance of 20 cm. The final image is formed at 25 cm from the eye. What is the minimum separation between two points of the object which can now be distinguished?