2. The elevator (E) starts from rest and moves upward with a constant acceleration. If the...
An elevator starts from rest with a constant upward acceleration. It moves 2.0 meters in the first 0.6 seconds. A passenger in the elevator is holding a 3 kg package by a vertical string. What is the tension in the string during the acceleration process? [Hint: remember Newton's 3rd law]
Problem #2 Collar A starts from rest and moves downward with a constant acceleration of 7 ins. Collar B moves upward with a constant acceleration and has an initial velocity of 8 ins. Knowing that collar B moves through 20 inches in the first 2 seconds, determine the following: (a) Accelerations of B and C (b) The time at which velocity of C is zero (c) The distance that C moves in the time determined in part b.
A 500 kg elevator starts from rest. It moves upward for 2.50 s with constant acceleration until it reaches its cruising speed, 1.75 m/s. a.) What is the average power of the elevator motor during this period? b.) How does this power compare with the motor power when the elevator moves at its cruising speed?
A 612-kg elevator starts from rest and moves upward for 4.50 s with constant acceleration until it reaches its cruising speed, 1.64 m/s. (a) What is the average power of the elevator motor during this period? hp (b) How does this amount of power compare with its power during an upward trip with constant speed? (Give the power during an upward trip with constant speed.) hp
008 10.0 points An elevator starts from rest with a constant upward acceleration and moves 1 m in the first 1.8 s. A passenger in the elevator is holding a 4.6 kg bundle at the end of a vertical cord. What is the tension in the cord as the ele- vator accelerates? The acceleration of gravity is 9.8 m/s. Answer in units of N.
A 639-kg elevator starts from rest and moves upward for 3.40 s with constant acceleration until it reaches its cruising speed, 1.78 m/s. (a) What is the average power of the elevator motor during this period? (b) How does this amount of power compare with its power during an upright trip with constant speed?
A 615-kg elevator starts from rest and moves upward for 2.90 s with constant acceleration until it reaches its cruising speed, 1.76 m/s. (a) What is the average power of the elevator motor during this period? Incorrect: Your answer is incorrect. Your response differs significantly from the correct answer. Rework your solution from the beginning and check each step carefully. hp (b) How does this amount of power compare with its power during an upward trip with constant speed? (Give...
2. The elevator shown in the figure moves downward with constant velocity of 5m/s. Determine a) the velocity of the cable "C b) the velocity of the counterweight "w" c) the relative velocity of the cable C with respect to the elevator d) the relative velocity of the counterweight W" with respect to the elevator
A 700 kg elevator starts from rest. It moves upward for 5.00 s with constant acceleration until it reaches its cruising speed, 1.75 m/s. (b) How does this power compare with the motor power when the elevator moves at its cruising speed? Pcruising = 12400 Your response is within 10% of the correct value. This may be due to roundoff error, or you could have a mistake in your calculation. Carry out all intermediate results to at least four-digit accuracy...
Problem 4. Collar A starts from rest att 0 and moves upward with a constant acceleration of 3.6 in./s2. Knowing that collar B moves downward with a constant velocity of 18 in./s, determine (a) the time at which the velocity of block C is zero, (b) the corresponding position of block C Problem 5. The three-dimensional motion of a particle is defined by the position vector r (Rtcos cwt) i ctj +(Rtsin wt) k. (The space curve described by the...