Question

A small block with a mass of 0.0600 kg is attached to a cord passing through a hole in a frictionless, horizontal surface (Figure 1). The block is originally revolving at a distance of 0.49 m from the hole with a speed of 0.73 m/s. The cord is then pulled from below, shortening the radius of the circle in which the block revolves to 0.13 m. At this new distance, the speed of the block is 2.75 m/s. b) What is the tension in the cord in the final situation when the block has speed v1 = 2.75 m/s? c) How much work was done by the person who pulled on the cord?

Name: a small block with a mass of 00600 kg is attached to a cord passing through a hole in a frictionless horizontal surface figure 1 the block is originally revolving at a distance of 049 m from 70707
Uploaded: 2022-03-16T18:10:05-08:00
Duration: 2 min 37 s
Channel: Qbs Educator
Description: a small block with a mass of 00600 kg is attached to a cord passing through a hole in a frictionless horizontal surface figure 1 the block is originally revolving at a distance of 049 m from 70707

          A small block with a mass of 0.0600 kg is attached to a cord
passing through a hole in a frictionless, horizontal surface
(Figure 1). The block is originally revolving at a distance of 0.49
m from the hole with a speed of 0.73 m/s. The cord is then pulled
from below, shortening the radius of the circle in which the block
revolves to 0.13 m. At this new distance, the speed of the block is
2.75 m/s.
b) What is the tension in the cord in the final situation when
the block has speed v1 = 2.75 m/s?
c) How much work was done by the person who pulled on the
cord?

Added by Gary L.

University Physics with Modern Physics

Hugh D. Young 14th Edition

Instant Answer

Solved by Expert Qbs Educator

03/16/2022

Step 1

73 m/s. Given: Mass of the block, m = 0.060 kg Initial speed, v_i = 0.73 m/s Distance from the hole, r_i = 0.49 m Using the formula for centripetal force: Tension, T = (m * v_i^2) / r_i Substitute the values: T = (0.060 kg * (0.73 m/s)^2) / 0.49 m T = 0.05 N Show more…

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A small block with a mass of 0.0600 kg is attached to a cord passing through a hole in a frictionless, horizontal surface (Figure 1). The block is originally revolving at a distance of 0.49 m from the hole with a speed of 0.73 m/s. The cord is then pulled from below, shortening the radius of the circle in which the block revolves to 0.13 m. At this new distance, the speed of the block is 2.75 m/s. b) What is the tension in the cord in the final situation when the block has speed v1 = 2.75 m/s? c) How much work was done by the person who pulled on the cord?