How much work was done by friction on the block

Assignment Help Physics

Reference no: EM13537093

A block of 4.4 kg is held at the top of a smooth incline. The incline has height of 2.1 m and is at an angle of 19 degrees above the horizontal. It is allowed to slide down the incline.

a) What is the kinetic energy (K), the potential energy (U), and the total mechanical energy (E) of the block at the top of the incline?

b) What are K, U, and E of the block when it reaches the bottom of the incline?

c) If the incline were not smooth, the velocity of the block at the bottom of the incline would be 4.1 m/s. How much work was done by friction on the block?

Reference no: EM13537093

Questions Cloud

How many units must be sold to break-even : Dancer Corp has a selling price of $25 per unit, and variable costs of $19 per unit. When 20,000 units are sold, profits equaled $88,800. How many units must be sold to break-even?

Find the total horizontal force at the same curve : a curve in a road forms part of a horizontal circle. as a car goes around it at constant speed of 14m/s the horizontal total force on the driver has magnitude 147n, find the total horizontal force at the same curve

Define the concentration of calcium nitrate as mole fraction : A solution contains 6.25g calcium nitrate [Ca(NO3)2]2 in 430.0g of water. Express the concentration of calcium nitrate as mole fraction and molality.

What are the company gross accounts receivable : The 2011 financial statements of Leggett & Platt, Inc. include the following information in a footnote. What are the company's gross accounts receivable at the end of 2008?

How much work was done by friction on the block : A block of 4.4 kg is held at the top of a smooth incline. The incline has height of 2.1 m and is at an angle of 19 degrees above the horizontal. How much work was done by friction on the block

Compute progressive fixed asset turnover ratio : Compute Progressive fixed asset turnover ratio for 2015.

Explain the density of a gas mixture that contains : What is the density (in grams per liter) of a gas mixture that contains 25.0% F2 and 75.0% He by volume at 768 mm Hg and 25.0 degrees C

What is the magnitude of the induced emf in the loop : A square loop (length along one side = 20 cm) rotates in a constant magnetic field which has a magnitude of 2.0 T. At an instant when the angle between the field and the normal to the plane of the loop is equal to 20? and increasing at the rate of 10..

Explain a water solution of sodium hypochlorite : A water solution of sodium hypochlorite (NaClO) has a concentration of 0.61m. Express this concentration as a mole fraction.

User Account

All Pages