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Forces and Motion
Page 9
Questions (4,620)
A parachutist relies on air resistance (mainly on her parachute) to decrease her downward velocity. She and her parachute have a
4 answers
asked by
Ben
1,905 views
A packing crate of weight 50N is placed on a plane inclined at 35°from the horizontal. If the coefficient of static friction
7 answers
asked by
Siyam
1,041 views
Suppose two children push horizontally, but in exactly opposite directions, on a third child in a wagon. The first child exerts
4 answers
asked by
Steve
7,665 views
An object weighs 0.25N in air and
0.01N when immersed in water. Calculate (a) its relative density (b) its apparent weight in a
5 answers
asked by
somay
1,937 views
A boat is pulled through a canal by horses walking parallel to the canal and exerting a force of 1000 N on a tow rope 40 meters
4 answers
asked by
Dylan
1,983 views
Three people pull horizontally on ropes attached to a post, as shown in the figure.(Figure 1) The total force that they exert on
5 answers
asked by
Nerdy
4,214 views
1)When a car drives off a cliff, why does it rotate forward as it falls? (Consider the torque it experiences as it rolls off the
4 answers
asked by
Kiarra
2,717 views
A sled and rider have a total mass of 58.4 kg. They are on a snowy hill accelerating at 0.4g. The coefficient of kinetic
4 answers
asked by
joy
3,255 views
A 16.0 m uniform ladder weighing 480 N rests against a frictionless wall. The ladder makes a 61.0° angle with the horizontal.
(a
4 answers
asked by
phys
4,788 views
A mass M = 40.0 kg is suspended by a massless string from the ceiling of a van which is moving with constant acceleration a, as
4 answers
asked by
Lina
3,182 views
An object of mass 10kg is placed on an inclined plane at 30 degree to the horizontal. Calculate the reaction between two surface
7 answers
asked by
God'sp
3,748 views
Two boys stand on the surface of a frozen lake where μs = 0.15 and μk = 0.10. The 30.0 kg boy shoves the 40.0 kg boy with a
5 answers
asked by
Mush
2,212 views
A crate sets on wooden horizontal surface (a wooden floor). The figure shows a top view of this looking down onto the crate
4 answers
asked by
Johnny
2,690 views
Bonnie and Clyde are sliding 500 bank safe across the floor to their getaway car. The safe slides with a constant speed if Clyde
4 answers
asked by
Kris
3,231 views
A block weighing 8.3 N requires a force of 2.6 N to push it along at constant velocity. What is the coefficient of friction
6 answers
asked by
Mel
4,236 views
The three blocks shown are released from rest and are observed to move with accelerations that have a magnitude of 1.5 m/s^2.
4 answers
asked by
Anonymous
3,332 views
A body of mass 3 kg experiences a force F=(2i +2j) N. If its initial velocity v=( -8i + 4j) m/s, then the time at which it will
5 answers
asked by
Clandestine
8,415 views
A net force of 25N is applied for 5.7s to a 12-kg box initially at rest. Waht is the speed of the box at the end of the 5.7s
6 answers
asked by
Natasha
8,910 views
A horizontal force of 45N applied to a crate of mass 9kg is just sufficient to move it. If the crate is now pulled at an angle
9 answers
asked by
Same
2,786 views
On vacation, your 1400-kg car pulls a 520-kg trailer away from a stoplight with an acceleration of 2.00 m/s2 .
A: What is the net
4 answers
asked by
LISA
4,030 views
You and your friend are pulling a 2.5 kg sled across a slightly rough patch on the frozen Rideau canal, such that there is a
5 answers
asked by
Melissa
2,237 views
A penny rests on top of a bowling ball. You give the bowling ball a slight bump and the penny slides off the frictionless,
4 answers
asked by
George
2,311 views
At the beginning of a new school term, a student moves a box of books by attaching a rope to the box and pulling with a force of
5 answers
asked by
Amanda
3,173 views
Two packing crate of masses 10.0kg and 5.00kg are connected by a light string that passes over a frictionless pulley .the 5.00kg
4 answers
asked by
rose
6,587 views
A student places five books next to each other on their ends. She then pushes the first book with her finger, and a few seconds
4 answers
asked by
ashley
3,323 views
Find the magnitude and direction of a)the resultant b)the equilibrant of two forces 10N acting in the direction N030'E and 15N
6 answers
asked by
lucky
1,715 views
An object in space is initially stationary relative
to the Earth. Then, a force begins acting on the object, starting with a
4 answers
asked by
jungtaesoo
3,434 views
Find the Magnitude of the force exerted by each cable to support the 625 N punching bag. One cable is connected to the ceiling
4 answers
asked by
kacey
3,908 views
To move a box you pull on the handle as indicated in the diagram shown below with a constant force F. The mass of the box is m =
4 answers
asked by
JennaPoop
2,005 views
A mobile consists of two very lightweight rods of length l = 0.400 m connected to each other and the ceiling by vertical
4 answers
asked by
Luca
1,331 views
A river flows at a speed of 4.60 m/s. A boat, capable of moving with a speed of 5.80 m/s in still water is rowed across the
4 answers
asked by
Alex
2,793 views
How much force is the air exerting on the front surface of the book with dimensions 19 x 27 cm. Assume atmospheric pressure
4 answers
asked by
ann
3,336 views
A solid uniform 45.0 kg ball of diameter 32.0 cm is supported against a vertical frictionless wall using a thin 30 cm wire of
4 answers
asked by
L
3,062 views
a box with mass 20kg rests on a frictionless ramp with a 15degree slope. a mover pulls up on a rope attached to the box to pull
5 answers
asked by
thalia
5,374 views
A skydiver leaps from a hovering helicopter at 2000 feet. Sketch a small graph showing each of the following from the time she
4 answers
asked by
Favour
1,358 views
The magnitude of each force is 283 N, the
force on the right is applied at an angle 41� and the mass of the block is 27 kg. The
4 answers
asked by
james
1,837 views
A 250N force is applied at an angle of 32 degrees above the horizontal to a 96kg box causing it to slide along a floor. The
4 answers
asked by
Julia
2,186 views
Two forces are applied to a car in an effort to accelerate it, as shown below. The first force, F1 = 364 N, is applied at an
4 answers
asked by
Davis Parker
8,721 views
The National Aeronautics and Space Administration (NASA) studies the physiological effects of large accelerations on astronauts.
4 answers
asked by
D
2,121 views
A 80 kg skier grips a moving rope that is powered by an engine and is pulled at constant speed to the top of a 25 degree hill.
4 answers
asked by
Kensey
5,966 views
Two tugboats pull a disabled supertanker. Each tug exerts a constant force of 1.80 * 10^6 N, one 16 degrees west of north and
4 answers
asked by
anonymous
3,264 views
Adolf and Ed are wearing harnesses and are hanging at rest from the ceiling by means of ropes attached to them. Face to face,
4 answers
asked by
Tara
5,137 views
Four forces act on a hot-air balloon, shown from the side in the figure below. Find the magnitude and direction of the resultant
4 answers
asked by
nik
5,888 views
Someone attaches a 27 kg bale of hay to one end of a rope passing over a frictionless pulley connected to a beam in a hay barn.
5 answers
asked by
ash
3,636 views
An elevator weighing 2.00*10^5 N is supported by a steel cable. What is the tension in the cable when the elevator is
4 answers
asked by
physics
4,564 views
If a car is accelerating downhill under a net force of 3,674N, what force must the brakes exert to cause the car to have a
5 answers
asked by
steve
3,583 views
A 37.0-kg crate rests on a level floor. A horizontal force of 50.0 N accelerates the crate at 1.00 m/s2.
Calculate the frictional
3 answers
asked by
Mike
1,682 views
You are helping your friend move a new refrigerator into his kitchen. You apply a horizontal force of F = (202i − 161k) N to
4 answers
asked by
Pissed off at this question rn
3,141 views
Two forces act on an object. The first force has a magnitude of 17.0 N and is oriented 68.0° counter-clockwise from the x axis,
4 answers
asked by
James
4,859 views
Your friend has slipped and fallen. To help her up, you pull with a force F, as the drawing shows. The vertical component of
4 answers
asked by
Dwight
7,508 views
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