Question

15. In the figure below, block A with mass 30.0 kg is connected to block B with mass 50.0 kg, by a massless string. The pulley is also massless and frictionless. The table is level, and the coefficient of kinetic friction between block A and the table is 0.425. The hand exerts a constant 50.0 N force upward on block B, as it descends. Calculate (a) the magnitude of the acceleration of the blocks, and (b) the tension in the string. (Answers: 3.94 m/s², 243 N)

Name: 15. In the figure below, block A with mass 30.0 kg is connected to block B with mass 50.0 kg, by a massless string. The pulley is also massless and frictionless. The table is level, and the coefficient of kinetic friction between block A and the table is 0.425. The hand exerts a constant 50.0 N force upward on block B, as it descends. Calculate (a) the magnitude of the acceleration of the blocks, and (b) the tension in the string. (Answers: 3.94 m/s², 243 N)
Uploaded: 2022-12-08T20:42:25-08:00
Duration: 3 min 43 s
Channel: Ivan Kochetkov

          15. In the figure below, block A with mass 30.0 kg is connected to block B with mass 50.0 kg, by a massless string. The pulley is also massless and frictionless. The table is level, and the coefficient of kinetic friction between block A and the table is 0.425. The hand exerts a constant 50.0 N force upward on block B, as it descends. Calculate (a) the magnitude of the acceleration of the blocks, and (b) the tension in the string. (Answers: 3.94 m/s², 243 N)

15. In the figure below, block A with mass 30.0 kg is connected to block B with mass 50.0 kg, by a massless string. The pulley is also massless and frictionless. The table is level, and the coefficient of kinetic friction between block A and the table is 0.425. The hand exerts a constant 50.0 N force upward on block B, as it descends. Calculate (a) the magnitude of the acceleration of the blocks, and (b) the tension in the string. (Answers: 3.94 m/s², 243 N)

Added by Jerome B.

University Physics with Modern Physics

Hugh D. Young 14th Edition

Instant Answer

Solved by Expert Ivan Kochetkov

12/08/2022

Step 1

Step 1:** For block A: The forces acting on block A are: - Tension force (T) acting upwards - Force of gravity (mg) acting downwards - Force of friction (f) acting in the opposite direction of motion Writing the equation of motion for block A: \[ T - mg - f = ma Show more…

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