A block of mass m = 331 g is dragged with a string across a rough horizontal table. The string tension is T = 2.47 N, and it pulls upward at an angle of ø = 42.0° with the horizontal. At one particular instant, the block is moving at a speed of v = 6.10 m/s. The coefficient of kinetic friction between the block and the table is uk = 0.609. m What is the power Pr supplied to the block by the string tension? PT = W What is the power Pf supplied by the force of friction? Pf = W At this instant, the block's speed is increasing. decreasing. O impossible to determine. constant.

A block of mass m = 331 g is dragged with a string across a rough horizontal table. The string tension is T = 2.47 N, and it pulls upward at an angle of ø = 42.0° with the horizontal. At one particular instant, the block is moving at a speed of v = 6.10 m/s. The coefficient of kinetic friction between the block and the table is uk = 0.609. m What is the power Pr supplied to the block by the string tension? PT = W What is the power Pf supplied by the force of friction? Pf = W At this instant, the block's speed is increasing. decreasing. O impossible to determine. constant.

Principles of Physics: A Calculus-Based Text

5th Edition

ISBN:9781133104261

Author:Raymond A. Serway, John W. Jewett

Publisher:Raymond A. Serway, John W. Jewett

Chapter7: Conservation Of Energy

Section: Chapter Questions

Problem 79P: A block of mass 0.500 kg is pushed against a horizontal spring of negligible mass until the spring...

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