Maria sets up a simple track for her toy block (m = 0.39 kg) as shown in the figure below. She holds the block at the top of the track, 0.54 m above the bottom, and releases it from rest. 0.54 m (a) Neglecting friction, what is the speed of the block when it reaches the bottom of the curve (the beginning of the horizontal section of track)? m/s (b) If friction is present on the horizontal section of track and the block comes to a stop after traveling 0.72 m along the bottom, what is the magnitude of the friction force acting on the block? N

Maria sets up a simple track for her toy block (m = 0.39 kg) as shown in the figure below. She holds the block at the top of the track, 0.54 m above the bottom, and releases it from rest. 0.54 m (a) Neglecting friction, what is the speed of the block when it reaches the bottom of the curve (the beginning of the horizontal section of track)? m/s (b) If friction is present on the horizontal section of track and the block comes to a stop after traveling 0.72 m along the bottom, what is the magnitude of the friction force acting on the block? N

Name: Maria sets up a simple track for her toy block (m = 0.39 kg) as shown
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Description: Maria sets up a simple track for her toy block (m = 0.39 kg) as shown in the figure below. She holds the block at the top of the track, 0.54 m above the bottom, and releases it from rest.0.54 m(a) Neglecting friction, what is the speed of the block

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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As shown in Figure P7.20, a green bead of mass 25 g slides along a straight wire. The length of the wire from point to point is 0.600 m, and point is 0.200 in higher than point . A constant friction force of magnitude 0.025 0 N acts on the bead. (a) If the bead is released from rest at point , what is its speed at point ? (b) A red bead of mass 25 g slides along a curved wire, subject to a friction force with the same constant magnitude as that on the green bead. If the green and red beads are released simultaneously from rest at point , which bead reaches point first? Explain. Figure P7.20
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