Which of the following is NOT true of a lever?   -it changes the magnitude of the force   -it changes the direction of the force   -it rotates about a central axis referred to as the principal axis   -it involves a load force and an effort force   -there are 3 classes of levers

Q: The pulley of Fig. wheel that fits loosely over a t in.-diameter shaft. A rope passes over the…

A: Given  The diameter of the wheel is Dw = 4 in. The weight of the pulley is Wp = 2 lb. The weight of…

Q: A homeowner is trying to move a stubborn rock from his yard. By using a a metal rod as a lever arm…

A: The mass of the rock, m = 325 kg The maximum force the homeowner can apply, Fo= 655 N The…

Q: A wood plank (length 4.8 m and mass 9.4 kg) is balanced between two saw horses, as shown in the…

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Q: Getting on a so-called “tall bike” is harder than mounting a regular bike. But once a rider is in…

A: Answer:   As per the above question, The defined principle involved in that is given below with…

Q: For the purposes of this problem, we’ll assume a simple model of the operation of your foot and…

A: Consider the FBD of the given arrangement as shown below:     Here, θ denotes the angle made by the…

Q: A block that is 5 m wide and .5 m tall is subjected to three forces and a moment as shown in Figure…

A: For block to be in equilibrium  1. Net force on the block is zero. 2. Net torque about any point is…

Q: Constants You are testing a small flywheel (radius 0.166 m) that will be used to store a smal amount…

A: Given data: The radius of the wheel r= 0.166m Part A The magnitude of force F=25.0N Distance ,d…

Q: A 2-m long bar makes an angle of 30° with the horizontal. A vertical force of 40 N is applied 0.4 m…

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Q: Shown is the operation of a garlic press. The lower part of the press is held steady, and the upper…

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Q: 5. A ladder whose lenght is 12 m and whose mass is 45 kg rest against the wall. Its upper end is…

A: The length of third side and forces are shown

Q: A force of magnitude 74 N is applied to a door. The lever arm is given at 0.875 m. Find the torque

A: Given Magnetic of force is F=74 N Lever arm is l=0.875 m

Q: MY NOTES As shown below, two forces are acting on a door (the hinge is the dark circle on the end).…

A: Given Length of the door = 1.5 m Distance between FA and FB  = 0.2 m θ = 5 Degrees To find out  The…

Q: 3. Rolling motion of a hoop Using conservation of energy, prove that a hoop released from a vertical…

A: Given data: The vertical height is h.   To be proved: The velocity at the bottom is v=gh.

Q: If arranged like this a lever can create a large output force Explain what is happening

A: Let us consider an arrangement in which we are getting a large output force on applying less input…

Q: A Person Standing on a Leaning Ladder 4 of 19 Review I Constants Auniform ladder with mass ma and…

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Q: Sir Lost-a-Lot dons his armer and sets out from the castle on his trusty steed (see figure below).…

A: We have a system that consists of a wall, a bridge, and a cable the bridge is at an angle θ to the…

Q: wooden plank is supported at two points as shown. What is the shortest distance from the end that a…

A: Given : Length of Plank L = 6 m Mass of plank , m = 20 kg  Mass of person M= 80 kg let shotest…

Q: When Jenny couldn't lift a box by herself, she decided to use a lever to move it. She placed a…

A: Let weight of the object is W.  On the lever, the distance from the fulcrum to object box is r1=1.6…

Q: A 13.8 kg child sits on a 6.0 m long teeter-totter at a point 1.5 m from the pivot point (at the…

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Q: Suppose you needed to raise a 215 kg mower a distance of 6.0 cm above the ground to change a tire.…

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Q: A 592.857 N painter needs to climb d=3.747 m up a ladder (measured along its length from the point…

A: Given weight of a painter = 592.857 N  d = 3.747 m up a ladder painter can move (measured along its…

Q: A block that is 5 m wide and .5 m tall is subjected to three forces and a moment as shown in Figure…

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Q: The pulley in the figure (Elgure 1)has radius 0.160 m and a moment of inertia 0.560 kg - m. The rope…

A: We need to find the speed of 4 kg block just before it hits the ground.

Q: The free body diagram below represents a 1 500 kg car sitting on a 3 000 kg bridge supported at its…

A: Required ::  Identify the one error in the torque equation.

Q: Law of the Lever The figure shows a lever system, similar to a seesaw that you might find in a…

A: Given,

Q: A wood plank (length 4.8 m and mass 10.9 kg) is balanced between two saw horses, as shown in the…

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Q: Two parents are doing some home improvement and their baby falls asleep on a board they are moving…

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Q: A 58-kg woman and a 75-kg man sit on a seesaw that is 4 meters long. The seesaw is perfectly…

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Q: A uniform meter stick with a mass of 175. grams is placed on a fulcrum. A weight of grams is placed…

A: To solve this we find the center mass of the two sections of the meterstick and find the moments due…

Q: We can model a pine tree in the forest as having a compact canopy at the top of a relatively bare…

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Q: τ=rFsinθ Is the version of torque we should now be using The figure above shows a uniform beam of…

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Q: A constant torque of 3.4 N.m is applied to an object , which undergoes 28 revolutions. Calculate the…

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Q: Two masses, m, =15 kg, m2 = 3kg in Atwood's machine are connected over the frictionless pulley that…

A: Given data: Mass of pulley is, M=0.2 kg. Radius of pulley is, R=12 cm =0.12 m. Distance moved down…

Q: Kathrine lets go of a cube of mass of m = 5 kilograms on her physics demo device she created. Her…

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Q: Wind energy is gaining increased attention, generating an increased interest in windmill technology.…

A: The given values are, mvane=207 kgk1=2.45 mk2=3.80 mIA=241 kg·m2IB=5860 kg·m2

Q: A torque of 170 N.m does 4602 J of work on a rotating flywheel. If the flywheels initial kinetic…

A: Given  Work done W=4602J Initial kinetic energy Ki=1289J

Q: ) The distance between the centers of the wheels of a motorcycle is 155 cm. The center of mass of…

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Q: 1.- What is the mechanical advantage of a wheel with a radius of 12 cm connected to an axle with a…

A: As per our guidelines, we are supposed to answer only first one question in case of multiple…

Q: 3 2. A 4.0m long board is supported one meter from each end as shown. The mass of the board is Tokg.…

A: Mass=10kg

Q: Using a screwdriver, you try to remove a screw from a piece of furniture, but can't get it to turn.…

A: Given : A man wants to open screwdriver.

Q: Semi-trailer trucks have an odometer on one hub of a trailer wheel. The hub is weighted so that it…

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Q: Wind energy is gaining increased attention, generating an increased interest in windmill technology.…

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Angular speed, acceleration and displacement

Angular acceleration is defined as the rate of change in angular velocity with respect to time. It has both magnitude and direction. So, it is a vector quantity.

Angular Position

Before diving into angular position, one should understand the basics of position and its importance along with usage in day-to-day life. When one talks of position, it’s always relative with respect to some other object. For example, position of earth with respect to sun, position of school with respect to house, etc. Angular position is the rotational analogue of linear position.