5.62 The mass of physics textbook is 3.40 kg. You pick the book up off a table and lift it 0.470 m at a constant speed of 0.270 m/s . a) What is the work done by gravity on the book? b) What is the power you supplied to accomplish this task?

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5.62 The mass of physics textbook is 3.40 kg. You pick the book up off a table and lift it 0.470 m at a constant speed of 0.270 m/s . a) What is the work done by gravity on the book? b) What is the power you supplied to accomplish this task?

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Answer 1

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Answer #1

THINK:

The product of force and velocity gives the power.

The work done against gravitational pull is equal to the potential energy.

RESEARCH:

The work done against gravitational pull that is the potential energy of the book is

…… (1)

The power supplied to the book to lift with constant velocity is given by,

…… (2)

Here the gravitational force acting on the book is,

CALCULATE:

Given,

Mass of the physics text book is,

The book is lifted to a height of,

Constant speed at which book lifted is,

The work done by gravity on the book is calculated by substituting the values in equation (1),

(b)

The gravitational force acting on the book is,

The power supplied to the book to lift it with constant velocity is,

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Answer 2

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5.62 The mass of physics textbook is 3.40 kg. You pick the book up off a table and lift it 0.470 m at a constant speed of 0.270 m/s . a) What is the work done by gravity on the book? b) What is the power you supplied to accomplish this task?

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5.62 The mass of physics textbook is 3.40 kg. You pick the book up off a table and lift it 0.470 m at a constant speed of 0.270 m/s . a) What is the work done by gravity on the book? b) What is the power you supplied to accomplish this task?

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A 1.1 kg book is lying on a 0.71 m -high table. You pick it up...

A 1.5 kg book is lying on a 0.80 m -high table. You pick it up...

A vertical spring (ignore its mass), whose spring constant is 875 N/m , is attached to a table and is compressed down by 0.160 m. What upward speed can it give to a 0.320-kg ball when released?

A vertical spring (ignore its mass), whose spring constant is 875 N/m , is attached to a table and is compressed down by 0.160 m. What upward speed can it give to a 0.320-kg ball when released?

A vertical spring (ignore its mass), whose spring constant is 875 N/m , is attached to a table and is compressed down by 0.160 m. What upward speed can it give to a 0.320-kg ball when released?

5.62 The mass of physics textbook is 3.40 kg. You pick the book up off a table and lift it 0.470 m at a constant speed of 0.270 m/s . a) What is the work done by gravity on the book? b) What is the power you supplied to accomplish this task?

Homework Answers

Add Answer to: 5.62 The mass of physics textbook is 3.40 kg. You pick the book up off a table and lift it 0.470 m at a constant speed of 0.270 m/s . a) What is the work done by gravity on the book? b) What is the power you supplied to accomplish this task?

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Earn Coins

A 1.1 kg book is lying on a 0.71 m -high table. You pick it up...

A 1.5 kg book is lying on a 0.80 m -high table. You pick it up...

A vertical spring (ignore its mass), whose spring constant is 875 N/m , is attached to a table and is compressed down by 0.160 m. What upward speed can it give to a 0.320-kg ball when released?

A vertical spring (ignore its mass), whose spring constant is 875 N/m , is attached to a table and is compressed down by 0.160 m. What upward speed can it give to a 0.320-kg ball when released?

A vertical spring (ignore its mass), whose spring constant is 875 N/m , is attached to a table and is compressed down by 0.160 m. What upward speed can it give to a 0.320-kg ball when released?

Add Answer to:
5.62 The mass of physics textbook is 3.40 kg. You pick the book up off a table and lift it 0.470 m at a constant speed of 0.270 m/s . a) What is the work done by gravity on the book? b) What is the power you supplied to accomplish this task?