A contestant in a winter games event pushes a 56.0-kg rock across a frozen lake with a force of 25 N at 30° below the horizontal as shown in Figure (a) below, and it moves with an acceleration of 0.39 m/s² to the right. (a) (b) (a) What is the normal force (in N) exerted by the lake surface on the rock? X Did you draw a free-body diagram and identify the forces acting on the system? Did you consider all applicable forces (or component of forces) in the vertical direction? N (b) Instead of pushing on the rock, the contestant now pulls on it with a rope over his shoulder at the same angle above the horizontal as in part (a). See Figure (b) above. Now what is the normal force (in N) exerted by the lake surface on the rock? Enter a number. change in the direction of the rope in this case. N

A contestant in a winter games event pushes a 56.0-kg rock across a frozen lake with a force of 25 N at 30° below the horizontal as shown in Figure (a) below, and it moves with an acceleration of 0.39 m/s² to the right. (a) (b) (a) What is the normal force (in N) exerted by the lake surface on the rock? X Did you draw a free-body diagram and identify the forces acting on the system? Did you consider all applicable forces (or component of forces) in the vertical direction? N (b) Instead of pushing on the rock, the contestant now pulls on it with a rope over his shoulder at the same angle above the horizontal as in part (a). See Figure (b) above. Now what is the normal force (in N) exerted by the lake surface on the rock? Enter a number. change in the direction of the rope in this case. N

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Description: A contestant in a winter games event pushes a 56.0-kg rock across a frozen lake with a force of 25 N at 30° below the horizontal as shownin Figure (a) below, and it moves with an acceleration of 0.39 m/s² to the right.(a)(b)(a) What is the normal fo

Physics for Scientists and Engineers, Technology Update (No access codes included)

9th Edition

ISBN:9781305116399

Author:Raymond A. Serway, John W. Jewett

Publisher:Raymond A. Serway, John W. Jewett

Chapter5: The Laws Of Motion

Section: Chapter Questions

Problem 5.19CQ: Give reasons for the answers to each of the following questions: (a) Clan a normal force be...

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