The escalator steps move with a constant speed of v = 0.6 m/s. (Figure 1) Part...

Transcribed Image Text:

The escalator steps move with a constant speed of v = 0.6 m/s. (Figure 1) Part A If the steps are 125 mm high and 250 mm in length, determine the power of a motor needed to lift an average mass of 107 kg per step. There are 32 steps. Express your answer to three significant figures and include the appropriate units. Figure 250 mm- 125 mm v = 0.6 m/s ? 1 of 1 P = 8413.056 W 4 m Submit Previous Answers Request Answer Incorrect; Try Again; 4 attempts remaining Provide Feedback Next > Part A The sports car has a mass of 2.2 Mg and accelerates at 6 m/s, starting from rest. (Figure 1) If the drag resistance on the car due to the wind is FD = (10v) N, where v is the velocity in m/s, determine the power supplied to the engine when t = 5 s. The engine has a running efficiency of = 0.62. Express your answer to three significant figures and include the appropriate units. Figure > 1 of 1 P = 586.96 Submit ? kW Previous Answers Request Answer FD Incorrect; Try Again; 5 attempts remaining Provide Feedback Next The escalator steps move with a constant speed of v = 0.6 m/s. (Figure 1) Part A If the steps are 125 mm high and 250 mm in length, determine the power of a motor needed to lift an average mass of 107 kg per step. There are 32 steps. Express your answer to three significant figures and include the appropriate units. Figure 250 mm- 125 mm v = 0.6 m/s ? 1 of 1 P = 8413.056 W 4 m Submit Previous Answers Request Answer Incorrect; Try Again; 4 attempts remaining Provide Feedback Next > Part A The sports car has a mass of 2.2 Mg and accelerates at 6 m/s, starting from rest. (Figure 1) If the drag resistance on the car due to the wind is FD = (10v) N, where v is the velocity in m/s, determine the power supplied to the engine when t = 5 s. The engine has a running efficiency of = 0.62. Express your answer to three significant figures and include the appropriate units. Figure > 1 of 1 P = 586.96 Submit ? kW Previous Answers Request Answer FD Incorrect; Try Again; 5 attempts remaining Provide Feedback Next