PRACTICE IT Use the worked example above to help you solve this problem. Two disgruntled businessmen are trying to use a revolving door, as shown in the figure. The door has a diameter of 2.60 m. The businessman on the left exerts a force of 647 N perpendicular to the door and 1.1 m from the hub's center, while the one on the right exerts a force of 806 N perpendicular to the door and 0.528 m from the hub's center. Find the net torque on the revolving door. (Indicate the direction with the sign of your answer.) N.m EXERCISE HINTS: GETTING STARTED I'M STUCK! A businessman enters the same revolving door on the right, pushing with 528 N of force directed perpendicular to the door and 0.621 m from the hub, while a boy exerts 388 N perpendicular to the door, 1.35 m to the left of the hub. (Indicate the direction with the sign of your answer.) (a) Find the torques exerted by each person. boy= N.m Tman N.m (b) Find the net torque on the door. net = N.m

PRACTICE IT Use the worked example above to help you solve this problem. Two disgruntled businessmen are trying to use a revolving door, as shown in the figure. The door has a diameter of 2.60 m. The businessman on the left exerts a force of 647 N perpendicular to the door and 1.1 m from the hub's center, while the one on the right exerts a force of 806 N perpendicular to the door and 0.528 m from the hub's center. Find the net torque on the revolving door. (Indicate the direction with the sign of your answer.) N.m EXERCISE HINTS: GETTING STARTED I'M STUCK! A businessman enters the same revolving door on the right, pushing with 528 N of force directed perpendicular to the door and 0.621 m from the hub, while a boy exerts 388 N perpendicular to the door, 1.35 m to the left of the hub. (Indicate the direction with the sign of your answer.) (a) Find the torques exerted by each person. boy= N.m Tman N.m (b) Find the net torque on the door. net = N.m

Glencoe Physics: Principles and Problems, Student Edition

1st Edition

ISBN:9780078807213

Author:Paul W. Zitzewitz

Publisher:Paul W. Zitzewitz

Chapter8: Rotational Motion

Section8.2: Rotational Dynamics

Problem 37SSC

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