1.1 A 50 kg cement block needs to be moved, over a distance of 10m, the power available is 200 W, while the block accelerates at 5 m/s? when this power is applied. 1.1.1 Determine the work it would take to move the block over the desired distance. 1.1.2 Determine the time it would take to move the block over the desired distance.

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1.1A 50 kg cement block needs to be moved, over a distance of 10m, the power available is 200 W, while
the block accelerates at 5 m/s? when this power is applied.
1.1.1 Determine the work it would take to move the block over the desired distance.
1.1.2 Determine the time it would take to move the block over the desired distance.
1.2 Determine the force applied to rotate an object around an axis with a torque of 100Nm. The angle
between the moment arm and the applied force is 56.44° and the moment arm has a length of 0.8 m.
1.3 Aluminium with an unknown mass and an initial temperature of 18 °C is to be melted in an arc furnace
in 1 hour and 30 minutes. The aluminium has a melting point of 938 K, a specific latent heat of fusion
of 458 kJ/kg and specific heat capacity of 1016.22 J/kg. C. The energy required for the melting process
is 156 MJ, the efficiency of the furnace is 81% and the cost of electrical energy is 92c/kWh.
1.3.1 Calculate the mass of the aluminium.
Transcribed Image Text:1.1A 50 kg cement block needs to be moved, over a distance of 10m, the power available is 200 W, while the block accelerates at 5 m/s? when this power is applied. 1.1.1 Determine the work it would take to move the block over the desired distance. 1.1.2 Determine the time it would take to move the block over the desired distance. 1.2 Determine the force applied to rotate an object around an axis with a torque of 100Nm. The angle between the moment arm and the applied force is 56.44° and the moment arm has a length of 0.8 m. 1.3 Aluminium with an unknown mass and an initial temperature of 18 °C is to be melted in an arc furnace in 1 hour and 30 minutes. The aluminium has a melting point of 938 K, a specific latent heat of fusion of 458 kJ/kg and specific heat capacity of 1016.22 J/kg. C. The energy required for the melting process is 156 MJ, the efficiency of the furnace is 81% and the cost of electrical energy is 92c/kWh. 1.3.1 Calculate the mass of the aluminium.
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