How much work was completed by the person

Assignment Help Physics
Reference no: EM138615

Q. A small block with a mass of 0.170 kg is attached to a cord passing through the hole in a frictionless, horizontal surface .The block is initially revolving at a distance of 0.50 m from the hole with a speed of 0.80 m/s. The cord is then pulled from below, shortening the radius of the circle in which the block revolves to 0.1 m. At this new distance, speed of the block is observed to be 3.60 m/s.

What is the tension in the cord in the original situation when block has speed v_0 = 0.90 m/s?

What is the tension in the cord in the final situation when block has speed v_1 = 3.00 m/s?

How much work was completed by the person who pulled on the cord?

Reference no: EM138615

Questions Cloud

What is the new angular speed : What is the velocity of the beam of electrons that go undeflected when passing during perpendicular electric and magnetic fields of magnitude 4700 V/m and 3.6×10-3 T, correspondingly.
Providing entrepreneurial ability : how much are households paid for providing entrepreneurial ability.
Calculate the speed of block at the instant : Calculate the speed of block at the instant the dielectric leaves the capacitor assuming it starts at rest and that the voltage across capacitor after the dielectric is removed is measured to be 200 V.
Company is of firewood in market with fixed costs : Hardwood Cutters presents seasoned as well split fireplace logs to consumers in Toledo, Ohio. The low-cost provider company is of firewood in market with fixed costs.
How much work was completed by the person : A small block with a mass of 0.170 kg is attached to a cord passing through the hole in a frictionless, horizontal surface .The block is initially revolving at a distance of 0.50 m from the hole with a speed of 0.80 m/s. The cord is then pulled from ..
Most risk to the subcontractor : determine which of the risks involved holds the most risk to the subcontractor.
What is the magnitude f of force : A 20 kg block is stacked on top of the 20 kg block. Both blocks are glued together. What is the magnitude F of force, acting horizontally on the two blocks, that is required to make the two blocks start to move.
Assume that the potential across terminals stays constant : The escape speed from a very small asteroid is only 26 m/s. If you throw a rock away from the asteroid at a speed of 39 m/s, what will be its final speed.
How much force is directed horizontally : When these two wires are connected in equivalent to the same battery, describe the reasoning of the steps that allow you to find out which of these wires will consume the greater amount of power by warming up and dissipating this energy as heat.

Reviews

Write a Review

 

Physics Questions & Answers

  What is specific heat of the cup material

A 0.230- coffee cup at 19 is filled with 0.240 of brewed coffee at 97. The cup and the coffee come to thermal equilibrium at 79.If no heat is lost to the environment, what is specific heat of the cup material.

  Calculate n, magnitude of the normal force

A 1600 kg car starts from rest at A, coasts 180m through a dip and comes to stop at B after coasting a distance d on level ground. If the rolling resistance is a constant force of 280N, conclude the distance d.

  What is the car''s speed at the bottom of dip

The sun falls on a concave mirror and forms an image 4.5 cm from the mirror. If an object 22 mm high is placed 12.7 cm from the mirror, where will its image be produced.

  Entire system is at rest and the spring is unscratched

If the 2 kg mass slides on a horizontal frictionless surface, what is the speed of the mass 4 kg while it has fallen a distance 0.4 m downward from its rest position.

  What is the total displacement and the angle of displacement

What is the total displacement and the angle of displacement

  What is an average power of its motor during this period

A wheel (radius = 0.20 m) is mounted on a frictionless, horizontal axle. A light rope wrapped around the wheel supports a 0.50-kilogram object, as shown below. When released from rest, the object falls with a downward acceleration of 5.0 m/s2. What i..

  Find the electric field inside the cylinder

Find the electric field inside the cylinder

  Find out ratio of the detector

Find out  ratio of the detector

  Compute coefficient of kinetic friction

Compute coefficient of kinetic friction

  Find out the average speed for the trip

Find out the average speed for the trip

  What is the value of g at the location of this satellite

What is the value of g at the location of this satellite. Discover the altitude of the satellite in meters.

  Considered frequency and draw the nodal maps

Considered frequency and draw the nodal maps

Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd