Home
Class 6
PHYSICS
A crowbar is of 125 cm length. Its fulcr...

A crowbar is of 125 cm length. Its fulcrum is at a distance of 25 cm from the load. Find out the mechanical advantage.

Text Solution

Verified by Experts

Load arm = 25 cm
Effort arm = 125 -25 =100 cm
MA=`"Length of effort arm"/"Length of load arm" =100/25`=4 (since MA is a ratio , it has no unit)
Promotional Banner

Topper's Solved these Questions

  • ENERGY

    ICSE|Exercise Questions (Fill in the blanks ) |3 Videos
  • ENERGY

    ICSE|Exercise Questions (Choose the correct option) |10 Videos
  • FORCE

    ICSE|Exercise Picture Based Questions |2 Videos

Similar Questions

Explore conceptually related problems

A crowbar of length 120 cm has its fulcrum situated at a distance of 20 cm from the load. Calculate the mechanical advantage of the crowbar.

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 a distance of 15 cm from the fulcrum. Find : (i) the mechanical advantage of the togns, and (ii) the effort needed.

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 distance of the fulcrum from the point at which the load acts

A parabola reflector is 15 cm deep and its focus is at a distance of 5 cm from its vertex. Find the diameter of the reflector.

A crowbar 2 m long is pivoted about a point 10 cm from its tip. (i) Calculate the mechanical advantage of the crowbar. (ii) What is the least force which must be applied at the other end to displace a load of 100 kgf?

A chord of length 24 cm is at a distance of 5 cm from the centre of the circle. Find the length of the chord of the same circle which is at a distance of 12 cm from the centre.

An object of height 2 cm is placed in front of a convex lens of focal length 20 cm at a distance of 15 cm from it. Find the position and magnification of the image.

In a circle 10 cm long chord is at a distance of 12 cm form the centre. Find the length of a chord at a distance of 5cm from the centre.

A chord of length 24 cm is at a distance of 5 cm form the centre of the circle. Find the length of another chord of circle which is at a distance of 12 cm from the centre.