A very small block of mass m= 0.3 kg is released from rest at point A at a height h= 2.3 m above the ground. It slides down the track as shown in the figure. It reaches point B with speed V= 3.8 m/s. Frorm point B it slides on a horizontal surface a distance d= 1.2 m to point C which is at the bottom of a vertical circular loop of radius R= 16 cm. The circular section of the track (C to D to E) is frictionless but for the remaining section (A to B to C) there is friction.

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 20P: As shown in Figure P7.20, a green bead of mass 25 g slides along a straight wire. The length of the...
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YOU HAVE TO SOLVE THE QUESTION (with parts a,b.c) ON AN EMPTY PAPER prepared on the Attendance Part.
QUESTION:
A very small block of mass m= 0.3 kg is released from rest at point A at a height h= 2.3 m above the ground. It slides
down the track as shown in the figure. It reaches point B with speed V= 3.8 m/s. Frorm point B it slides on a
horizontal surface a distance d= 1.2 m to point C which is at the bottom of a vertical circular loop of radius R= 16 cm.
The circular section of the track (C to D to E) is frictionless but for the remaining section (A to B to C) there is friction.
3.
a)
Calculate the AE,, (change in thermal energy) for the system between points A and B.
b)
The coefficient of kinetic friction between the block and the horizontal surface (between B and
C) is Hk
Calculate
u, so that the force on the block by the track at point D is equal to 2mg.
c)
Find the minimum speed V, with which the block must pass through point C, if it is just not to fall off at
the top (point E) of the circular loop.
Transcribed Image Text:YOU HAVE TO SOLVE THE QUESTION (with parts a,b.c) ON AN EMPTY PAPER prepared on the Attendance Part. QUESTION: A very small block of mass m= 0.3 kg is released from rest at point A at a height h= 2.3 m above the ground. It slides down the track as shown in the figure. It reaches point B with speed V= 3.8 m/s. Frorm point B it slides on a horizontal surface a distance d= 1.2 m to point C which is at the bottom of a vertical circular loop of radius R= 16 cm. The circular section of the track (C to D to E) is frictionless but for the remaining section (A to B to C) there is friction. 3. a) Calculate the AE,, (change in thermal energy) for the system between points A and B. b) The coefficient of kinetic friction between the block and the horizontal surface (between B and C) is Hk Calculate u, so that the force on the block by the track at point D is equal to 2mg. c) Find the minimum speed V, with which the block must pass through point C, if it is just not to fall off at the top (point E) of the circular loop.
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