ZuoTi.Pro
Question

A machine of force P pulls a treasure chest along a 8 foot inclined surface with...

A machine of force P pulls a treasure chest along a 8 foot inclined surface with an angle of elevation 20 degree. Assume the treasure chest has 40kg in mass and force P is 5 kiloNewtons applied parallel to surface , please solve:

a) work due to gravity

b) Work due to the external force

c) work due to friction if knetic friction coeff = 0.25

science   physics   
0 0
Add a comment Improve this question Transcribed image text
Next > < Previous
Sort answers by oldest

Homework Answers

Answer #1

(a)Work done by force,

W = F . d (dot product)

Work done by gravity,

Wg= Fg . d =Fg* d * cos(theta)

Angle btween gravotational force and displacement,

theta = -(90-20) = 70

Wg = m* g* d* cos (-70)

= -40*9.81*8*0.3048*0.3420

= -327.23 J

(b)

Work due to external force,

W= F. d

= 5*10^3*8*.3048

=12192 J

(c)

Work due to kinetic friction force,

Wf =-Ff. d

=-mu*m*g*d

=-0.25*40*9.81*8*.3048

=-239.2 J

0 0
Add a comment
Know the answer?
Add Answer to:
A machine of force P pulls a treasure chest along a 8 foot inclined surface with...
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Log In

Sign Up

Not the answer you're looking for? Ask your own homework help question. Our experts will answer your question WITHIN MINUTES for Free.
Similar Homework Help Questions

  • an object of mass 10kg rests on an inclined plane of 30 degree angle with horizontal....

    an object of mass 10kg rests on an inclined plane of 30 degree angle with horizontal. a force P=200 N acts on it upward along the inclined plane and moves it 20m. the coefficient of friction UK=0.25. 2 4 x (cm) 6. An object of mass 10 kg rests on an inclined plane of 30 angle with horizontal. A force 0° angle with horizontal. A force P 200 N acts on it upward along the inclined plane and moves it...

  • force p is applied to block 2 parallel to an inclined smooth surface

    Force \(P\) is applied to Block 2 parallel to an inclined smooth surface to hold the two blocks in equilibrium (see figure). The blocks are connected by a cable that runs over a frictionless pulley at \(A\).(a) Find the required range of values of force \(P\) to maintain equilibrium.(b) Revise your solution if friction between Block 2 and the inclined surface \(\left(\mu_{s}=0.2\right)\) is now considered. Let \(W_{1}=10\) kips, \(W_{2}=40\) kips, \(\theta_{2}=60^{\circ}\), and \(\theta_{1}=30^{\circ}\).

  • A mass M slides upward along a rough plane surface inclined at angle to the horizontal....

    A mass M slides upward along a rough plane surface inclined at angle to the horizontal. Initially the mass has a speed V before it slides a distance Lup the incline. The coefficient of kinetic friction between the mass and the incline is *. While sliding, the acceleration of the mass is: Directed upward along the incline Directed downward along the incline Determined by the force of gravity on the mass Determined by the frictional force on the mass Determined...

  • Question 1 1 pts A mass M slides upward along a rough plane surface inclined at...

    Question 1 1 pts A mass M slides upward along a rough plane surface inclined at angle to the horizontal. Initially the mass has a speed V. before it slides a distance L up the incline. The coefficient of kinetic friction between the mass and the incline is fut. While sliding, the acceleration of the mass is: Directed upward along the incline Directed downward along the incline Determined by the force of gravity on the mass Determined by the frictional...

  • A mass M slides downward along a rough plane surface inclined at angle to the horizontal....

    A mass M slides downward along a rough plane surface inclined at angle to the horizontal. Initially the mass has a speed Vi before it slides a distance L down the incline. The coefficient of kinetic friction between the mass and the incline is uk. The power associated with the work done by the frictional force is (Select] The power associated with the work done by the gravitation force is (Select] The power associated with the work done by the...

  • Question 1 1 pts Mi A mass M slides upward along a rough plane surface inclined...

    Question 1 1 pts Mi A mass M slides upward along a rough plane surface inclined at angle o to the horizontal. Initially the mass has a speed V, before it slides a distance L up the incline. The coefficient of kinetic friction between the mass and the incline is k. While sliding, the acceleration of the mass is: Directed upward along the incline Directed downward along the incline OOOO Determined by the force of gravity on the mass Determined...

  • Mi A mass M slides-downward along a rough plane surface inclined at angle = 29.21 in...

    Mi A mass M slides-downward along a rough plane surface inclined at angle = 29.21 in degrees relative to the horizontal. Initially the mass has a speed Vo = 7.68 m/s, before it slides a distance L = 1.0 m down the incline. During this sliding, the magnitude of the power associated with the work done by friction is equal to the magnitude of the power associated with the work done by the gravitational force. What is the coefficient of...

  • A mass M slides downward along a rough plane surface inclined at angle \Theta\: Θ =...

    A mass M slides downward along a rough plane surface inclined at angle \Theta\: Θ = 29.8 in degrees relative to the horizontal. Initially the mass has a speed V_0\: V 0 = 5.32 m/s, before it slides a distance L = 1.0 m down the incline. During this sliding, the magnitude of the power associated with the work done by friction is equal to the magnitude of the power associated with the work done by the gravitational force. What...

  • A mass M slides downward along a rough plane surface inclined at angle \Theta\: Θ =...

    A mass M slides downward along a rough plane surface inclined at angle \Theta\: Θ = 31.7 in degrees relative to the horizontal. Initially the mass has a speed V_0\: V 0 = 6.9 m/s, before it slides a distance L = 1.0 m down the incline. During this sliding, the magnitude of the power associated with the work done by friction is equal to the magnitude of the power associated with the work done by the gravitational force. What...

  • helpp!!! Work Done by Different Forces (No Calculator): You try F or N Normal Force perpendicular...

    helpp!!! Work Done by Different Forces (No Calculator): You try F or N Normal Force perpendicular to the surface. Q1: The block in the figure is moving upwards along a smooth inclined plane at angle 0. A force F is pushing it upwards, parallel to the incline as shown in the figure. The block moved a distance, d. (a) Draw a FBD and (b) figure out work done by forces F.F. fand N fFriction FA Applied force. Force towards the...

ADVERTISEMENT
Free Homework Help App
Download From Google Play
Scan Your Homework
to Get Instant Free Answers
Need Online Homework Help?
Ask a Question
Get Answers For Free
Most questions answered within 3 hours.
ADVERTISEMENT
ADVERTISEMENT
ADVERTISEMENT