Mechanical energies
Q: A car uses a power of 100 W within 25 seconds to operate. What is the work done?
A: Write the given values with suitable variables. P=100 Wt=25 s Here, P denotes the power and t…
Q: What must be the power output of the pump?
A: The mass of the water is The depth of the well is The ejection speed of the water is Power Where,…
Q: what is the power used in this exercise?
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Q: The disk of mass M= 1 kg and radius R=1 m in the figure has a mass m=30 g attached to one end. The…
A: We are given the angular velocity of system. Angular velocity is counterpart of linear velocity in…
Q: What is the angle of incline for a ramp that reaches the top of a 1.4 m ledge and offers a…
A: It is the measure of amplification of applied force.
Q: What is the maximum amount of work that a 600-W motor can do in 10 seconds?
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Q: A casting of mass 150 kg is lifted 4 meters in 15 seconds by means of a crane. What is the power?
A: Given data The mass of the casting is given as m = 150 kg. The casting is lifted up to h = 4 m. The…
Q: A bowling ball has a mass of 10kg and is at a height of 5 meters What is its GPE and KE at the top
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Q: If the weight was 120 lbs what would the power be in hirsepower
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Q: 5. If a small motor does 200 J of work to move a toy 17 m, what force does it exert?
A: This problem can be solved using work energy theorem. From work energy theorem we have, W=Fxd Where…
Q: Shows an example of a Rube Goldberg machine. Identify two types of simple machines that are included…
A: A simple machine is a mechanical device that changes the direction or magnitude of a force. They can…
Q: A 85 lb mass stretches a spring 3 inches. Find the work done by the force to stretch the spring 7…
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Q: 3. A box (mass = 100 g) is initially connected to a compressed (x = 80 cm) spring (k = 100 N/m) at…
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Q: how to find if an object has an initial mechanical energy
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Q: An object undergoing projectile motion was launched with an initial velocity of 15 m/s and at an…
A: Given, Initial velocity of projectile , v = 15 m/s Angle,θ = 30.0° The distance travelled in…
Q: Solve this Mechanical engineering question correctly, attempt only if you are sure
A: Step 1: Step 2: Step 3: Step 4:
Q: Which of the following is not a unit of power? O J/s O N'm O horsepower Watts
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Q: An electric car has a usable battery capacity of 31.3 kWhr which can supply a range of 134 miles. A…
A: Variables known, Battery capacity of an electric car is 31.3KWhr, Range of the electric car is…
Q: How much work is done lifting a 35 pound object from the ground to the top of a 30 foot building if…
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Q: power
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Q: How much power does it take to lift 40.0 N 11.0 m high in 6 s?
A: Given data: Weight (mg) = 40.0 N Height (h) = 11.0 m Time (t) = 6 s Required: The power (P)
Q: Power is expressed by which of the following units?
A: Solution
Q: The unit of Power (P) is
A: We have to answer the unit of Power (P)
Q: Calculate the mechanical advantage.
A: The formula for the mechanical advantage is:
Mechanical energies
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- What average power does a weight lifter need to lift 225 lb a distance of 4 ft in 1.0 s?how much work is done lifting a 30 kilogram block 3 metersA spring has a natural length of 30cm if a 30N force is required to keep it stretched to a length of 44cm how much work in J is required to stretch it from 30cm to 37cm. Round to two decimal places