Atwood’s machine consisted of two masses connected by a string that passes over a pulley, as shown below. The hanging mass m2 accelerates in the downwards direction. I also apply a small opposing upwards force F = 1⁄4 m2g on the bottom on the mass m2 but the mass m2 continues to accelerate in the downwards direction. (a) Find the Tension of the masses in terms of m1 and m2. (b) Calculate the numerical value of the Tension if m1 = 3.1 kg and m2 = 5.4 kg.

Organelles are 1. responsible for producing power for the cell 2. tiny structures in the cell that carry out the cell's activities 3. responsible for digestion in the cell 4. found outside of the membrane

Which of the following forces require physical contact? tension air resistance friction magnetic force applied force

During the apollo moon missions, astronauts were concerned about the effects of newton's third law of motion when: o a. they ejected waste water, because they were concerned that it would push them off course. o b. they reentered earth's atmosphere, because they were carrying heavy moon rocks. o c. they took off from earth, because a large force was required to generate large acceleration. o d. they detected incoming space debris, because the inertia of the debris could damage their ship.