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Q: If a weightlifter presses 400n weight 0.5m over his head in 2 seconds what is the power of the weightlifter?
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A weightlifter expends 294 W of power lifting a weight to a height of 2 m in 10 seconds What mass has he lifted?

To calculate the mass lifted, first calculate the work done using the formula Work = Power x Time. In this case, Work = 294 W x 10 s = 2940 J. Then, use the formula for work done against gravity, which is Work = Force x Distance. Substitute the values 2940 J for Work, 2 m for Distance, and 9.81 m/s^2 for acceleration due to gravity to find the Force (Weight). Finally, use the formula Weight = mass x gravity, where gravity is 9.81 m/s^2, to determine the mass lifted.


What makes a press a power press?

A power press is classified based on its tonnage capabilities, with high tonnage presses considered power presses. They are capable of producing high force to shape or form materials like metal sheets. Power presses also have built-in safety features and controls to handle the high forces involved.


What is the power expended when a barbell is lifted 2.2m in 2 seconds?

The power during the lift is (weight of the barbell in Newtons)/4.4 watts.Note:Power is not "expended". Energy is. Power is the rate at which energy is expended.


An elevator lifts five passengers 30 meters in 24 seconds the power is 15000 watts what is the total weight of the elevator and passengers?

12,000 N, since force is equal to weight in this situation


How much power does a weightlifter expend when lifting a 50-kg barbell a vertical distance of 1.2 m in a time interval of 1.5 s?

The work done by the weightlifter is calculated by ( W = F \cdot d ), where ( F ) is the force applied (equal to the weight of the barbell, which is 50 kg * 9.8 m/s^2) and ( d ) is the vertical distance (1.2 m). Thus, ( W = 50 kg * 9.8 m/s^2 * 1.2 m ). Power is then power is given by ( P = \frac{W}{t} ) where ( t = 1.5 s ). Substituting values, we get ( P = \frac{50 kg * 9.8 m/s^2 * 1.2 m}{1.5 s} ). Calculating this gives the power expended by the weightlifter.


How much power is necessary to do 60 joules of work in 20 seconds?

The power required to do 60 joules of work in 20 seconds is determined by the formula: Power = Work / Time. Therefore, Power = 60 joules / 20 seconds = 3 watts. So, 3 watts of power is necessary to do 60 joules of work in 20 seconds.


A weight lifter has lifted 150 kg to a height of 2 m. He now lowers it carefully to the floor in 5 seconds. How much power is used Remember the force of an object's weight mass and times gravity.?

The work done in lowering the weight is equal to the force of gravity (150 kg * 9.8 m/s^2) times the distance moved (2 m). This gives us the total work done. To calculate power, we divide this work by the time taken (5 seconds). This gives us the power used by the weight lifter in lowering the weight.


Which power of a telescope might be expressed as 0.5 seconds or arc?

which power of a telescope might be expressed as "0.5 seconds of arc"?


What is the duration of The Power of Women?

The duration of The Power of Women is 1800.0 seconds.


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The duration of Rocket Power is 1440.0 seconds.


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The duration of Power Lunch is 3600.0 seconds.