Efficiency = $\frac{M.A}{V.R}$ = 0.75
= $\frac{600/400}{VR}$
= VR = 2
johnmulu answered the question on February 14, 2017 at 13:05
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A crane lift a load of 2000 kg through a vertical distance of 3.0 m in 6 seconds. Determine the (i) Work done
(Solved)
A crane lift a load of 2000 kg through a vertical distance of 3.o m in 6 seconds.Determine the:
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Date posted:
February 14, 2017
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Answers (1)
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Date posted:
February 14, 2017
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Date posted:
February 14, 2017
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Answers (1)
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Date posted:
February 14, 2017
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Answers (1)
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Date posted:
February 14, 2017
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(Solved)
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Date posted:
February 14, 2017
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Answers (1)
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(Solved)
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Date posted:
February 14, 2017
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Answers (1)
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(Solved)
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Date posted:
February 14, 2017
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Answers (1)
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(Solved)
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Date posted:
February 14, 2017
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Answers (1)
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(Solved)
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Date posted:
February 14, 2017
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Answers (1)
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(Solved)
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Date posted:
February 14, 2017
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Answers (1)
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(Solved)
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Date posted:
February 14, 2017
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Answers (1)
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A high jumper usually lands on thick soft mattress. Explain how the mattress helps in reducing the force of impact
(Solved)
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Date posted:
February 14, 2017
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Answers (1)
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(Solved)
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Date posted:
February 14, 2017
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Answers (1)
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A gun is fired vertically upwards from the top of an open truck moving horizontally, uniform velocity of 50ms-1. The bullet achieves a maximum height of 45 m
(Solved)
A gun is fired vertically upwards from the top of an open truck moving horizontally, uniform velocity of 50ms-1. The bullet achieves a maximum height of 45 m.
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Date posted:
February 14, 2017
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Answers (1)
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A trolley is moving at constant speed in friction compensated track. Some plasticine is dropped on the trolley and sticks on it. State with a reason what is observed about the motion of the trolley.
(Solved)
A trolley is moving at constant speed in friction compensated track. Some plasticine is dropped on the trolley and sticks on it. State with a reason what is observed about the motion of the trolley.
Date posted:
February 14, 2017
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Answers (1)
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(Solved)
State Newton's first law of motion.
Date posted:
February 14, 2017
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Answers (1)
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A nail at the bottom of a beaker containing glycerine appears to be 6.8 cm below the surface of glycerine. Determine the height of the column of glycerine in the beaker
(Solved)
A nail at the bottom of a beaker containing glycerine appears to be 6.8 cm below the surface of glycerine. Determine the height of the column of glycerine in the beaker. (Take the refractive index of glycerine as 1.47)
Date posted:
February 14, 2017
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Answers (1)
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A water wave of wavelength 18 mm is incident on a boundary of shallow water at right angles. If the wavelength in the shallow end is 14.4 mm
(Solved)
A water wave of wavelength 18 mm is incident on a boundary of shallow water at right angles. If the wavelength in the shallow end is 14.4 mm, Determine the refractive index of water for a wave moving from the deep to the shallow end.
Date posted:
February 14, 2017
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Answers (1)
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Determine the speed of light in water given that the speed of light in air is 3.0 x 108 ms-1 and the refractive index of water is 1.33
(Solved)
Determine the speed of light in water given that the speed of light in air is 3.0 x 108 ms-1 and the refractive index of water is 1.33.
Date posted:
February 14, 2017
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Answers (1)