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Mechanics
Page 10
Questions (40,219)
Robin Hood exerted an average force of 100 N in pulling back his bow by 0.5 m. He fired the arrow of mass 0.2 kg vertically
4 answers
asked by
Anonymous
633 views
Calculate the radius of parachute that will slow a 70 Kg person to a terminal velocity of 8 m/s. The person tries to avoid leg
3 answers
asked by
ncphysics
1,075 views
A 525-N trunk is placed on an inclined plane that forms an angle of 30.0 degrees with the horizontal. What are the components of
4 answers
asked by
Suzanne
4,643 views
An elastic chord can be stretched to its elastic limit by a load of 8.0N. Assuming it gives an extension 250cm when a load of
6 answers
asked by
Josh
927 views
A ball of mass 522 g starts at rest and slides down a frictionless track, as shown below. It leaves the track horizontally,
3 answers
asked by
brittany
773 views
* 248. Fig. 3.1 shows a firefighter of total weight 840 N in equilibrium at the top of a
ladder that is pivoted at point P. I C
3 answers
asked by
Anonymous
388 views
Three objects A,B,C are placed 50.0 cm apart along a straight line. A and B have a mass of 10.0 kg, while c has a mass of 15.0
4 answers
asked by
anonymous
886 views
an elephant of mass 50kg stands with all four feet on the ground. each foot has an area of 0.2m^2calculate the pressure exerted
4 answers
asked by
daniel
717 views
Two banked curves on a highway have the same radius. Curve A is banked at 13 degrees and highway B is banked at 19 degrees. A
3 answers
asked by
Scott
1,259 views
A cable 45.4 m long is carrying a uniformly distributed load
along its span. If the cable is strung between two posts at the same
4 answers
asked by
Chris
1,314 views
An athlete runs from one end to the other end of a semicircular track whose radius is 70m.what is the total distance covered by
4 answers
asked by
tania
1,298 views
two bodies of mass m1 and m2 are attached to two ends of a string which passes over a massless and frictionless pulley. find the
2 answers
asked by
andrew
743 views
Tarzan spies a 35kg chimpanzee in severe danger, so he swings to the rescue. He adjusts his strong, but very light, vine so that
3 answers
asked by
Jen
2,421 views
Assuming that it takes 0.10 s for the driver to react before applying the brakes, what is the stopping distance (the distance
4 answers
asked by
Laura
1,122 views
a force of 2N stretches an elastic material by 30mm. What additional force will stretch the material by 35mm assuming the
3 answers
asked by
sadiq
856 views
An astronaut constructs a pendulum with a length of 1 meter on a new planet. If the period is 3.9 second, what is the
2 answers
asked by
John
504 views
A 120-MT concrete beam is lifted from the floor by two tandem heavy lift cranes up to a
target height of 7.5 meters. Calculate
1 answer
asked anonymously
109 views
what happens when a falling object reaches terminal velocity?
1 answer
asked anonymously
101 views
A puppy tugs with a force of 45N to pull a rope on a pulley. This lifts his 90N bag of dog food. What is the mechanical
1 answer
asked anonymously
30 views
A toy car with a mass of 0.05kg rolls down a ramp. Include the term blue car. The car's speed triples from 25 m/s to 75 m/s. How
1 answer
asked by
random
59 views
Two bodies of weights 50N and 10N are connected to the two ends of a light inextensible string which passes over a smooth
1 answer
asked anonymously
48 views
Which of the following items would be associated with the Cl:claw classifier?
(2 points) tennis ball basketball bowling ball
5 answers
asked by
:)
28 views
This is the stem.]
(3 points) Put responses in the correct input to answer the question. Select a response, navigate to the
1 answer
asked by
#Dogmama
54 views
Imagine an object falling to the Earth. Which of the following most accurately describes the motion of that object?
Responses: It
1 answer
asked by
AR
54 views
i need help with this one
thanks A particle starts from rest and is acted on by a net force that does work at a rate that is
7 answers
asked by
Damon
5,889 views
A 12-g bullet moving horizontally strikes and remains in a 3.0-kg block initially at rest on the edge of a table. The block,
4 answers
asked by
Anonymous
7,846 views
The position of an object connected to a spring varies with time according to the expression x = (7.1 cm) sin (2.1π t). Find
(a)
4 answers
asked by
Tom
7,147 views
A spring loaded 100g dart gun is affixed at rest on a 150g frictionless cart. It fires a 25g dart with a velocity of 30 m/s.
5 answers
asked by
Tyger2020
1,880 views
This is part of a lab with a mass attached to a spring, and the mass attached is of unknown weight.
Which of the following can
4 answers
asked by
Tyger2020
1,351 views
A chain that is 30 m long and weighs 120N.m hangs from the drum of a winch.
Determine the work to wind the first 9m of the chain
4 answers
asked by
Yolanda
1,183 views
two forces of 5N and 12N respectively act on the same point.show how you would determine the magnitude of the resultant by using
5 answers
asked by
Anonymous
3,789 views
A 16kg sled starts up a 28 degree incline with a speed of 2.4 m/s . The coefficient of kinetic friction is = 0.27.
part a)How far
6 answers
asked by
leeann
7,971 views
A baseball is thrown upwards from a height of 2 meters with an initial velocity of 10 meters per second. Use the fact that -9.8
4 answers
asked by
Emily
8,202 views
a bullet of mass 0.01kg is fired into a sandbag of mass 0.49kg handing from atree.the sandbag with the bullet embedded into it
11 answers
asked by
najma
7,601 views
A block is acted on by a force that varies as (2.8*10^4 N/m)x for 0<=x<=.21m, and then remains constant at 5880 N for larger x.
1
4 answers
asked by
Megan
4,374 views
An airplane with an airspeed of 60 km/hr lands on a runway where the wind speed is 40 km/hr.
(a) What is the landing speed of the
4 answers
asked by
price
2,060 views
a force f= 3i+cj+2k acting on a particle causes displacement , d=-4i+2j+3k.
If the work done is 6 joule then the value of c. Plz.
5 answers
asked by
marley
3,149 views
A 30 kg child on swing 2m long is released from rest when the swing supports make an angle of 37 with the vertical
a) neglecting
15 answers
asked by
Tesfahun melaku
277 views
Two rocks of very different sizes are dropped from the same height. Which value will be different for the two rocks?(1 point)
the
10 answers
asked by
Help plz
6,269 views
"If a skier coasts down a slope at an angle of 24 degrees below the horizontal, what is her acceleration if the force of
5 answers
asked by
solexgirl12
2,384 views
The drag force acting on a car travelling at a speed v is given by the equation F=kAv^2
Where A is the area of the front of the
4 answers
asked by
cylinder
3,351 views
A rock of mass 5kg is pushed over the edge of a cliff which is 200m high
1.ignore air resistance and calculate the speed of the
5 answers
asked by
Annah van tonder
1,114 views
A 75 kg man weighs 735 N on the Earth's surface. How far above the surface of the Earth would he have to go to "lose" 15% of his
6 answers
asked by
Anonymous
5,792 views
Calculate the density in SI units of a solid cube that measures
5 cm on each side and has a mass of 350 g.
7 answers
asked by
meera
1,602 views
A 1200 kg airplane starts from rest and with a constant average forward acceleration of magbitude 5.0 m/s, reaches its takeoff
4 answers
asked by
Dakota
1,005 views
A ball with a mass of 0.5 kg is traveling at 25 m/s and collides with a ball at rest that has a mass of 2 kg. After the
4 answers
asked by
Faoruk
1,441 views
A clerk pushes a filing cabinet of mass 22.0 kg accross the floor by exerting a horizontal force of magnitude 98 N. The
4 answers
asked by
Raj
2,280 views
You are in an egg drop contest which you win by breaking your egg the hardest. You drop your egg off of a 3 story building (12m
4 answers
asked by
satvik
198 views
A bullet of mass of 30g and travelling at a speed of 200msˉ¹ embeds itself in a wooden block. The bullet penetrates a distance
5 answers
asked by
James
3,551 views
A student wants to determine the effect of mass on kinetic energy. She will drop two balls of the same size into a pool of
6 answers
asked by
Connexus
3,163 views
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