Expalin why the mechanical advantage of class III lever is always less than 1.

Q: A pair of knife has its blades 15cm long, while its handles are 7.5 cm long. Calculate its…

A: Given: Load arm = 7.5 cm Effort arm = 15 cm. Solution: Mechanical advantage of a lever is the ratio…

Q: lever

A:

Q: the mechanical advantage of the lever.

A: Given data;  Distance=30 cmOther end distance=90 cm from the load Find the following point a,b, and…

Q: Name the pulley which has no gain in mechanical advantage. Explain, why is such a pulley then used?

A:

Q: Give one example each of a class 1 lever where the mechanical advantage (a) more than 1 and (b) less…

A:

Q: The twe children shown in the figure below are balanced on a seesaw of negligible mass. The i…

A: Given,mass of the first child, m1 = 25.3 kgat a distance, r1 = 1.44 m (from pivot)mass of the second…

Q: levers are classified into three classes according to muscle force All fulcrum point weight

A: Levers are classified into three classes. These are given as, Class 1 Class 2 Class 3

Q: Explain why the mechanical advantage of class III lever is always less than 1.

A: Mechanical advantage of a lever is given as,

Q: How is the mechanical advantage related to the velocity ratio for (i) an ideal machine (ii) a…

A: The relation between mechanical advantage and velocity ratio is

Q: In a second-class lever, the efforta. is applied to the end opposite thefulcrum.b. is applied to the…

A: Lever is the technique that is used to lift or move the heavy weight, with very small amount of…

Q: Give reason why in a single fixed pulley, the velocity is always more than the mechanical advantage.

A: The expression for the velocity ratio,

Q: Puppy dog Snoopy weighs 10 N, while his little friend Woostock weighs 2N. Woodstock is seated 1.75 m…

A:

Q: Both a pair of scissors and a pair of pliers belong to the same class of levers, Name the class of…

A: A pair of scissors and a pair of pliers both belongs to class 1 lever.A pair of scissors has…

Q: The total mechanical energy of the block is the sum of kinetic and potential energies.

A:

Q: A force of 50N is applied to the end of a lever, which is moved a certain distance. If the other end…

A: Step 1Force that is applied to the end of a lever isTo find the force exerted when the other end of…

Q: Using a lever, Joe is able to lift a 10,000 N car off the ground with a force of 1,000 N. What is…

A: Weight of car= 10000 N Force applied by Joe We know that mechanical advantage(M.A)= output force/…

Q: Determine the mechanical advantage of a lever system in which an 800 N effort force exerts a 200 N…

A: Mechanical advantage is the ratio of load and effort in a lever system. The formula for the…

Q: The most common lever in the body is first class lever.

A: It is false statement

Q: For the pulley system shown, what is the upper limit of weight the strong man can lift?

A: Given:  A man lifts a weight by a pulley

Q: Let's say you apply 50 lbs of force to the long end of a wrench, and the other end of the wrench…

A: Given, In wrench, effort applied = 50 lbs Wrench applies force on bolt = 800 lbs

Q: a

A: To find:  acceleration a of the masses let tension in the ropes be T Given: m1=2 kg m2=4 kg let…

Q: What part should be labelled as the effort arm for the pulley shown?

A:

Q: State one reason why is mechanical advantage less than the velocity ratio for an actual machine?

A: Mechanical advantage of an actual machine is less than the velocity ratio due to waste energy.

Q: What weight is necessary to start the system of blocks shown moving to the right? The coefficient of…

A:

Q: Here is the question below :) What is the numerical value for the IMA of a lever if the effort arm…

A:

Q: Calculate the mechanical advantage.

A: The formula for the mechanical advantage is:

Q: Why is it important to reduce friction on compound machines?

A: The friction force is the force which opposes the relative motion between the two bodies.

Q: The total length of a first class lever is 9.0 ft. This is used to move a load of 390 lbs, as…

A: givenTotal length of first class lever=9 ftload=390 lbs

Q: Consider the following figure. w Free-body diagram • CG F Fo (a) What is the mechanical advantage of…

A: This question is based on Mechanics (Simple Machine) Topic. We need to know the formula for…

Q: A bicycle is a compound machine using levers and gears. (a) True (b) False

A: Levers and Gears are simple machines on their own. However, bicycle is a compound machine that is…

Q: What type of simple machine is an axe?   A) Lever B) Wedge C) Both A & B D) The screw

A: 1. A lever is a simple machine which consists of a rigid rod pivoted at a fulcrum. 2. Wedge is a…

Q: The figure below is for a 50 kg person standing n an elevator as it moves down. Use g = 10 m/s?,

A:

Q: Think about a place in your daily life where a pulley system is used to give you a mechanical…

A: Imagine a well in which a pulley is used to draw out the  water through the help of a bucket.  In…

Q: 25. If a complex machine is made up of a lever with a mechanical advantage of 3 and a wheel and axle…

A: Mechanical advantage is resistance force, Fr divided by effort force , Fe. And MAtotal  = MA1 ×MA2

Q: mechanical advantage ?

A: Given ; Sword blade is 20cm long effort arm= 20 cm  load arm= 2.0 cmCalculate it mechanical…

Q: Match each type of simple machine with its example. 1. wedge a. doorknob b. chisel 2. wheel and axle…

A: 1. Wedge - chisel (both have one thick end and one pointed end) 2. Wheel and axle - Doorknob (same…

Q: Which of the following is a compound machine?   A) Screw B) Knife C) Bicycle D) Ramp

A: (A) A screw has an inclined plane wrapped around a cylinder or a cone. It is a simple machine. Thus,…

Q: Explain why the mechanical advantage of class II lever is always more than 1.

A: A lever is a rigid bar which is rotating around a pivot point called fulcrum. It is mainly used to…

Q: Where does the force need to be produced on a lever if it has a resistance arm of .90m and 35kg of…

A: In order to balance the two weights, the torque must be equal to zero.Solve the force applied to the…

Q: Vhich of the pulleys will have a mechanical advantage of one? Select all that apply. 150 N SON SON…

A: SOlution: To find which pulley has the mechanical advantage of one.

Q: Nobody at the playground wants to play with the obnoxious boy, so he fashions a seesaw as shown so…

A: The picture shows the boy sitting on the board with the fulcrum being extremely close to him and…

Q: A typical car has an axle with 1.05 cm radius driving a tire with a radius of 31.8 cm. What is its…

A: Mechanical Advantage gives a measure of the amplification of force done by a Machine. It is the…

Q: A device for exercising the upper leg muscle is shown in the figure, together with a schematic…

A: Given Data: The mass of an object is, m=10 kg   For the first condition of equilibrium, As upper leg…

Torque

Torque is the rotational equivalent of linear force in physics and mechanics. Based on the course of study, it is also known as the moment of force, rotational force, or turning effect.