Why does a three-legged support work better than one with four legs?
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A: Consider the speed of the car in the first case is v.
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A: Here is the step-by-step explanation of the concept:Step 1: Understanding the Problem:Given:Maximum…
Q: A 1,000 -W motor powers a hoist used to lift cars at a service station. -How much time would it take…
A: Given data: Power (P) = 1000 W Mass (m) = 1500 kg Height (h) = 2 m New Power (P') = 2000 W
Q: A 1,000-W motor powers a hoist used to lift cars at a service station. (a) How much time would it…
A: Power is defined as the work done per unit time. P=Worktime When a mass is raised to some height, we…
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Q: Conservative forces lose no mechanical energy to
A: Any energy of the system is lost into the heat energy. In the case of the conservative force, there…
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Q: will the power generated by a falling 10 kg object be the same as that generated on a 1.0 kg object…
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Q: what is the power required for a 55 kg student to run up a set of stairs that has a height of 20 m…
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Q: Energy can neither be created nor be destroyed. Then what happens to the energy spent against…
A: Friction is simply energy being converted into heat energy. So all the energy spent overcoming…
Q: A race car travelling on a straight and flat stretch of track must overcome 1.5 kN of resistance to…
A: Given : F = 1.5 kN = 1.5 x 103 N v = 190 km/hr = 190 x 1000/3600 = 52.78 m/s
Q: Loan pushes a box of mass 11.5 kg is pushed across a rough surface (Hg = 0.25) for a distance of 4.8…
A: As per our guidelines we will solve first question for you. To get remaining question solved please…
Q: How much power would be required to hoist a 48 kg couch up to a 26 m high balcony in 5.0 seconds?…
A: p=Et=mght
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Q: If 3.0 J of work is done in raising a 225 g apple, how far is it lifted?
A: Given W =3.0J mass = 225g so, F = 0.225 kg x 9.8 m/s2 = 2.205N
Why does a three-legged support work better than one with four legs?
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- If the man in exercise of 500 J pushes the lawn mower 6.0 m in 10 s, how much power does he expend?What average power is required for a runner with a mass of 80 kg to reach a speed of 9 m/s during a time of 2 s?A man pushes a lawn mower on a level lawn with a force of 206 N. If 31% of this force is directed forward, how much power does he expend in pushing the mower 7.3 m in 10 s?
- A man pushes a lawn mower on a level lawn with a force of 189 N. If 28% of this force is directed forward, how much power does he expend in pushing the mower 5.5 m in 16 s?What is the power done by gravity to make a ball of mass 0.68 kg roll from 1.3 m above the ground to the bottom along a curved path if it takes 2.68s to do so?45. Suppose a person uses a mechanical jack to lift one half the weight of a car with a mass of 1200 kg. During each stroke of the jack handle, the person’s hand is pushing for a distance of 40.0 cm but the car is lifted only 5.0 mm. (a) Assuming the jack is 100% efficient, how much force must the person exert on the handle as the car is lifted? (b) If the actual amount of force required on the handle is 90.0 N, what is the actual efficiency of the jack?
- What is the power demonstrated by a weightlifter when lifting a 420 kg barbell 1.4 meters in 0.65 seconds?A penny is dropped from the top of the statue of liberty. The statue if liberty is 93 m tall. If a penny has about 3 jould of gravitational potential energy at the top, how much kinetic energy will it have half way point (45.6 m)Mac lifts a barbell up over his head the length of his arms. The barbell has a mass of 35 kg. If the length of his arms is relative to his shoulders is 71 cm, how much power does will Mac generate in lifting the barbell in 3 seconds?