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Work and Energy
Page 8
Questions (3,220)
A horizontal force with a magnitude of 3.0 newtons applied to a 7.0 kilogram mass moves the mass horizontally a distance of 2.0
5 answers
asked by
Carlos
4,180 views
The force shown in Figure 7-17 moves an object from x = 0 to x = 75 m, where the interval between vertical dashed lines is 25 m.
4 answers
asked by
Teya
1,991 views
A uniform chain 10m long and weighing 6 kg permetre hangs vertically.calculate the work required to wind it up..
Plzz solve it
4 answers
asked by
arya
1,671 views
A mover pushes a 60 lb box 30 ft along a level floor at constant speed with a force directed 45 degrees below the horizontal. If
4 answers
asked by
Emma
1,266 views
A rough 4cm long plank is used road an inclined plane to raise a 500N bag up to the floor of a long lorry 2m high. 200j of work
4 answers
asked by
Anonymous
724 views
A woman does 200 J of work to move a table that weighs 600 N across the floor for a distance of 4.0 meters. What is the
4 answers
asked by
anonymous
1,662 views
When catching a baseball, a catcher's glove moves by 12 cm along the line of motion of the ball. If the baseball exerts a force
5 answers
asked by
mike
7,417 views
At the top of a pole vault, an athlete actually can do work pushing on the pole before releasing it. Suppose the pushing force
4 answers
asked by
blah
3,833 views
How much work(energy) is needed to lift an object that weighs 200N to a height of 4m?
My question: is weight the same as force?
5 answers
asked by
Rose
3,389 views
Starting from rest, a 5.0 kg block slides 2.5 m down a rough 30.0 degrees incline in 2.0s. Determine (a) the work done by the
5 answers
asked by
Anonymous
4,464 views
A block of mass m = 4.30 kg slides along a horizontal table with speed v0 = 8.50 m/s. At x = 0 it hits a spring with spring
4 answers
asked by
Olivia
2,111 views
A plane weighing 220 kN (25 tons) lands on an aircraft carrier. The plane is moving horizontally at 67 m/s (150 mi/h) when its
4 answers
asked by
John
1,945 views
In 2.0 minutes, a ski lift raises 4 skiers at constant speed to a height of 170 m. The average mass of each skier is 65 kg. What
4 answers
asked by
michelle
2,215 views
A man pushes a 50N box across a level floor at a constant speed of 2.0 m/s for 10 s. Whats the average power output by the man.
5 answers
asked by
Rosie
2,181 views
A boy on a bucycle drags a wagon full of newspapers at 0.80m/s for 30 minutes using a force of 40N. How much work has the boy
5 answers
asked by
kelly
4,539 views
A crate of mass 20 kg is pushed up a frictionless ramp by a person as shown in the figure below. Calculate the work done by the
5 answers
asked by
Warren
1,689 views
A man cleaning his apartment pushes a vac- uum cleaner with a force of magnitude 57.6 N. The force makes an angle of 25.3◦
5 answers
asked by
Edgar
1,673 views
A piece of luggage is being loaded onto an airplane by way of an inclined conveyor belt. The bag, which has a mass of 10.0 kg,
4 answers
asked by
Jenny
3,953 views
A 22 g bullet is accelerated in a rifle barrel 43.2 cm long to a speed of 907 m/s.
Use the work-energy theorem to find the
4 answers
asked by
Patrick
4,323 views
A horizontal force of 150 N is used to push a 43.5 kg packing crate a distance of 5.30 m on a rough horizontal surface. If the
4 answers
asked by
Raqual
1,847 views
Maricruz slides a 66 kg crate, m, up an inclined ramp 2.0 m long and attached to a platform 1.0 m above floor level, as shown in
4 answers
asked by
Iki
5,259 views
A mass of 0.116 kg hangs from a vertical spring in the lab room. You pull down on the mass and throw it vertically downward. The
3 answers
asked by
Chris
1,059 views
what is The total work done in lifting a typical high
school physics textbook a vertical distance of 0.10 meter
6 answers
asked by
Anonymous
3,779 views
A 855 N crate rests on the floor.
a) How much work is required to move it at constant speed 7.7 m along the floor against a
5 answers
asked by
Jen
1,894 views
Suppose a box on a frictionless ramp is being pulled by a rope with a tension of 350 N making an angle of 50° to the horizontal
4 answers
asked by
Hugsy
2,180 views
A spring has a natural length of 24 cm. If a 20-N force is required to keep it stretched to a length of 40 cm, how much work W
4 answers
asked by
skating
3,309 views
If you push a box a distance of 2,000 meters with a force of 1 newton, how many Calories have you used?
1 Calorie= 4,187 Joules
6 answers
asked by
BrainyBird
2,654 views
How much work is done by the horizontal force F = 150 N on the 18 Kg block when the force pushes the block 5.0 M up along the 32
4 answers
asked by
Anyi
2,081 views
A crate of mass 50kg is pulled up a rough inclined plane ,inclined at an angle of 60 degree to the horizontal.determine the
4 answers
asked by
Julius
2,319 views
As part of a training schedule a weightlifter pushes a heavy metal block
along the floor. The lifter applies a force of 850 N
4 answers
asked by
alex
1,069 views
A block with mass m = 14 kg rests on a frictionless table and is accelerated by a spring with spring constant k = 4545 N/m after
3 answers
asked by
a
1,879 views
16. How much work is done on a bookshelf being pulled 4.00 m at an angle of 35.0„a from the horizontal? The magnitude of the
5 answers
asked by
michelle
2,544 views
a 1.50 kg book is sliding along a rough horizontal surface. At point A it is moving at 3.21 m/s, and at point B it has slowed to
4 answers
asked by
Jud
2,953 views
A box is pushed a distance of 2 m with a force of 20 N. How much work is done on the box?
5 answers
asked by
don
2,081 views
2. A 75.0-kg painter climbs a ladder that is 2.75 m long leaning against a vertical wall. The ladder makes a 30.0° angle with
4 answers
asked by
Anonymous
2,885 views
(i) A 20m chain with a mass-density of 3kg/m (coiled on the ground). How
much work is performed lifting the chain so that it is
3 answers
asked by
HELP ASAP
2,871 views
a medtech student pushes a 30kg carton of books across the floor of her dormitory by exerting a constant force of 185 N at an
2 answers
asked by
yumi
563 views
A team of dogs drags a 112 jk sled 2.23 km over a horizontal surface at a constant speed. The coefficient of friction between
3 answers
asked by
selena
716 views
Under what condition can a force act on an object and yet do no work on that object?
A. The object moves with no acceleration. B.
4 answers
asked by
Alex
1,548 views
Mark uses 27-J of work to carry the laundry basket with a force of 17-N. What is the distance he carried the laundry basket?
Plea
4 answers
asked by
Jocelyn
1,250 views
A tank is full of water. Find the work required to pump the water out of the spout. Use the fact that water weighs 62.5 lb/ft3.
4 answers
asked by
skating
5,509 views
Catching a wave, a 77-kg surfer starts with a speed of 1.2 m/s, drops through a height of 1.60 m, and ends with a speed of 8.5
6 answers
asked by
Amanda
1,137 views
A 0.60-kg basketball is dropped out of the window that is 6.1 m above the ground. The ball is caught by a person whose hands are
4 answers
asked by
Steve
3,541 views
Two workhorses tow a barge along a straight canal. Each horse exerts a constant force of magnitude F, and the tow ropes make an
4 answers
asked by
HELP
7,657 views
Suppose that the force on the block FT is increased so that the block accelerates (starting from rest) at a = 2.2 m/s2.
Now what
3 answers
asked by
Charles
529 views
A 0.157kg ball is thrown straight up from 1.81m above the ground. Its initial vertical speed is 10.40m/s. A short time later, it
4 answers
asked by
Anonymous
1,261 views
A 64.4-kg skateboarder starts out with a speed of 2.11 m/s. He does 81.6 J of work on himself by pushing with his feet against
4 answers
asked by
P
2,863 views
In 2 minutes, a conveyor belt moves 300 pounds of recyclable aluminum from the delivery truck to a storage area. A smaller belt
5 answers
asked by
David
4,388 views
Three applied forces, F1= 20.0 N, F2= 40.0 N, and F3 = 10.0 N act on an
object with a mass of 2.00 kg which can move along an
4 answers
asked by
naf
8,048 views
A med tech student pushes a 30-kg carton of books across the floor of her dormitory by exerting a constant force of 185 N at an
4 answers
asked by
Paul
2,368 views
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