Problem 1: A meter stick of length L and mass M is held vertically with one end touching the ground and is released from rest so that it falls down flat on the ground. Find an expression for the speed of the (formerly top) end of the stick just before it hits the ground (assume the end originally touching the ground does not slip).

Q: Steel ball with radius of 0.06 m lays on a bottom of the lake 3 m deep. What work is needed to lift…

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Q: Consider a helicopter in two different situations: at sea level and at the top of a high mountain.…

A: We know that  The value of acceleration due to gravity decreases with height as gh = g(1-2h/R) This…

Q: What do you understand

A: Given;  What do we understand if the machine is 85% efficient. Derive the statement ?

Q: Choose which statement describes a process in which an external force does negative work on the…

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Q: work

A: To calculate the work required to pump the liquid, we can use the formula:W=∫h1h2ρgA(h)dhWhere:- W…

Q: Efficiency

A: the values provided in the question are as follows- effort = 750n load = 4000 n no. of pulleys = 3…

Q: Define REVERSIBLE STEADY-FLOW WORK

A: Definition: The steady flow devices deliver the most and consume the least work when it undergoes a…

Q: What is the scalar product of the two vectors shown in figure? 20 - 121° 21-2N 140°

A: Given : →A→=21.2  N→B→=19  cm=0.19 m

Q: 3. A trough, full of water, is 1m long and its cross section is a triangle which is 3m high and 2m…

A: A trough is filled with the water assuming that its density is 1000kg/m3.The vertical cross-section…

Q: ou do work?

A: Given: To explain the measure the rate of work as,

Q: QUESTION 3 Which of the following best represents the free-body diagram for M₁? A A OB C C O B C D

A: Determine, Free body diagram for block M1

Q: Explain what it means for a force to do work on an object.

A: The work done is given by

Q: If the same amount of work is performed in three times the amount of time, what is true about the…

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Q: Calculate the energy used per day (kWh) of a car with an efficiency of 14 kilometers per liter and…

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Q: F 14 12 10 8. 4 2 4 6. 8. 10 12 Ax

A: To determine: Work done. Formula used: W = F.d Here, F is the force and d is the distance. In the…

Q: w all calculations you need throughout your procedure. DO NOT INCLUDE YOUR CALCULATIONS OF FORCE…

A: From the picture , it is at 20.4cm and taken is 0.1062 s

Q: pump is required to lift 810 kg of water per minute from a well 15.0 m deep and eject it with a…

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Q: What is the force that does zero work on a closed path Concurrent force Contact force Conservative…

A: Introduction :- Here we need to check for which type of force work done around a closed path is…

Q: Explain the work you had done when running and walking in the stairs

A: Work done is defined as the product of the displacement (d) and the force acted in the direction of…

Q: A 8.9 kg mass hanging from a spring scale is slowly lowered onto a vertical spring, as shown in the…

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Q: State whether the potential energy of the underlined object increases or decreases as a result of…

A: State whether the potential energy of the underlined object increases or decreases as a result of…

Q: Work is negative is you are going down the stairs. Is the statement true or false. true false lack…

A: When the height of an object changes then the gravitational potential energy of the object also…

Q: An electric pump on the ground floor of a building takes 10 minutes to fill a tank of volume 2000…

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Q: Explain if it is possible for a system to have negative potential energy

A: Answer Potential energy is the energy stored in any system or object by virtue of its position.…

Q: Actual Mechanical Advantage

A: THEVALUES PROVIDED IN THE QUESTION ARE AS FOLLOWS- LOAD = 6000 N EFFORT = 2000 N WHEEL ROTATE A FULL…

Q: How LONG DOES IT TAKE for a 75 Watt light bulb to burn out if it can 4 p perform 600,0dO J of work…

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Q: Energy transformations occur within systems in nature. True False

A: Energy transformation occur within systems in nature- True.

Q: A cylindrical water tank 4 meters high with a radius of 2 metess is buried so that the top of the…

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Q: In the above problem energy flows from

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Q: How does a machine make work easier? A machine makes work easier by changing.... Choose the three…

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Q: In which of the following cases is work done?   what is the answer?    a) running around the oval…

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Q: Work can be conserved True or false

A: Work cannot be conserved in the same way that energy is conserved. In physics, the principle of…

Q: A box is being pulled to the right by a force P on a rough surface (with friction). Which of the…

A: A box is being pulled to the right by a force P on a rough surface (with friction).

Q: If a body is whirled in a circle, then the work done on it ___. A) is zero B) is positive C) cannot…

A: Work done by body is given by:  Work done = Force×dispalcement  When body is whirled in a circle net…

Q: Which of the following would be a result of positive work being done on a moving car? * The…

A: Let the mass of car = m Let the speed of moving car = v

Q: True or False: Machines ONLY increase the amount of work that is done. A True B False

A: Solution: Given: True or False. Machines ONLY increase the amount of work that is done. A. True B.…