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Mechanics
Page 4
Questions (40,219)
A small sphere X of mass M is placed a distance d from a point mass. The gravitational force on the sphere X is 90 N. Sphere X
5 answers
asked by
Nate
4,135 views
in the diagram, the balls velocity is 6 m/s, and the height of the ramp is 1 m. what will the balls velocity be at the top of
5 answers
asked by
Nevaeh
2,025 views
A ball is thrown 12 meters in the air (so that the initial up-and-down distance is 24 meters). The ball rebounds 95% of the
5 answers
asked by
Anonymous
4,498 views
a grasshopper jumps at an angle 50 degrees from the ground with an initial velocity of 5 m/s. when air resistance is absent,
5 answers
asked by
Clevy
2,154 views
When a 300N force is applied to a box weighing 600N the box moves 3.0 horizontal in 20seconds
7 answers
asked by
Patricia
4,407 views
Hi, the following is a problem that concerns angular momentum:
Modern hard drives spin very fast! The part that holds the data is
5 answers
asked by
Grace
1,922 views
What is the total energy of a 15-kg mass attached to a spring oscillating horizontally with an amplitude of 20 cm and an angular
4 answers
asked by
Vladimir
1,039 views
A spiral spring is compressed by 0.04m.calculate the energy stored in the spring,if the force constant is 100Nm-1
6 answers
asked by
Taiwo
1,077 views
A load of 4N extends a spring by 10mm. What load would extend it by 15mm?
5 answers
asked by
Luyando
757 views
A block and tackle having a velocity ratio of 5 is used to raise a load of 400N through a distance of 10m. If the work done
6 answers
asked by
Michael Nyame
3,640 views
A spring of natural length 30cm is stretched to 35cm by a load of 15N. Calculate the extension produced,the elastic constant of
5 answers
asked by
Anonymous
1,305 views
A boy whose mass is 40kg runs up a flight of 30 steps each 150mm high in 6seconds. Find the average power developed (take g as
12 answers
asked by
Igbekele
4,424 views
a scrow jack whose pitch is 2mm is used to raise a motor car of mass 900kg through a height of 200cm the length of the tommy bar
5 answers
asked by
Na'anshep k.peter
1,490 views
A box weighing 20N, resting on a ramp, is kept at equilibrium by a 4-N force at an angle of 20 to the ramp, together with a
4 answers
asked by
Connie
1,144 views
A bottle full of a water has amass of 45g; when full mercury its mass is 360g. If the mass of the empty bottle is 20g calculate
5 answers
asked by
Azar
2,118 views
A force of a magnitude 500N is applied to a Free end of a spiral spring of contant 1.0*10NM,Cal the energy stored in a streched
4 answers
asked by
Agbowo Emmanuel
704 views
A metre rule is balanced by masses of 24g and 16g from its ends.Find the position of its pivot.
4 answers
asked by
Sam
342 views
A body ovlf mass 100kg is placed in a liftfind the reaction between the floor of the lift and the body when the lift moves
1 answer
asked by
Victoria
412 views
a diver makes a running horizontal jump off a cliff located 4m above the water level below. how fast must the driver be
3 answers
asked by
kelsey
756 views
solve a spiral spring has a length of 14cm when a force of 4n is hung on it a force of 6n extends the spring by 4cm calculate
1 answer
asked by
Emmanuel
26 views
A box slides downwards at a constant velocity on an inclined surface that has a coefficient of friction uK = .58 The angle of
5 answers
asked by
Sam
5,524 views
During a soccer game a ball (of mass 0.425 kg), which is initially at rest, is kicked by one of the players. The ball moves off
5 answers
asked by
Aries
6,770 views
A 1200 kg car is moving at 95 km/h when the driver notices a deer down the road. He immediately moves his foot toward the brake
5 answers
asked by
Caroline
6,474 views
1. Determine the effort required to lift a load of 100 N using:
(a) Using a single fixed pulley (b) A single movable pulley (c)
5 answers
asked by
Mustafa khamis shaaban
386 views
A 75 kg water skier is pulled by a horizontal tow rope. She goes from rest to 6.0 m/s in 4.5 s when the rope's tension is 140 N.
4 answers
asked by
amalia
902 views
A girl pushes a load of mass 20kg to a distance of 10 metres in 5 seconds calculate (1) the work done (2) the energy used (3)
4 answers
asked by
Olorunnimbe
750 views
Gardeners would need to use 960 Newtons of force to lift a potted tree 45 centimeters onto a deck. Instead, they set up a lever.
46 answers
asked by
meli
1,340 views
A track consists of a frictionless incline plane, which is a height of 0.5m, and a rough horizontal section with a coefficient
4 answers
asked by
Gwladys
4,102 views
The height, in metres, of an object that has fallen from a height of 180 m is given by the position function s(t)=-5t^2
4 answers
asked by
Morris
3,829 views
The man slides the 100-kg crate across force of 200 N. If the crate was initially at rest, how far will the crate move before
its
4 answers
asked by
Ivan
1,713 views
How could you increase the mechanical advantage of the ramp below?
a decrease the length of the ramp b increase the length of the
1 answer
asked by
no name
101 views
When you hit a 0.27kg volleyball the contact time is 50ms and the average force is 125N.
If you serve the volleyball (from rest)
1 answer
asked by
satvik
148 views
make m the subject of the formula mg-t= ma
5 answers
asked by
esther edomoh
560 views
A fly wheel rotates at 300 rev/min.if the radius is 6cm through what total distance does a point on the rim travel in 30 sec.
5 answers
asked by
shoaib
1,765 views
A metre ruler is balanced at the 35cm mark by a 1N weight placed at the 15cm mark. What is the mass of the ruler?
4 answers
asked by
lion
778 views
A projectile is fired with an initial speed of 120m.s' at an angle of 60' above the horizontal from the top of a 50m high cliff.
4 answers
asked by
Mykmoloko
1,967 views
a)How much work is required to lift a 35-kg object from the ground 3.0 m into the air?
b) How much gravitational potential energy
19 answers
asked by
Annie
5,094 views
a solid alumimium casting for a pulley consists of the discs each 1 1/2 cm thick of diameters 4 cm, 6 cm,and 8 cm.a central hole
7 answers
asked by
kolapo
2,169 views
a 0.5kgball falls into a heap of sand from a height of 10m above the sand. it comes to rest 2.5m beneath the surface of sand.
4 answers
asked by
Raveen
1,704 views
The change in the momentum of an object (Ä p) is given by the force, F, acting on the object multiplied by the time interval
4 answers
asked by
Casablanca
2,844 views
a concrete slab of mass 400 kg accelerates down a concrete slope inclined at 35 degrees. the coefficient of kinetic friction
10 answers
asked by
ezana
8,994 views
62kg person in an elevator is moving up at a constant speed of 4.0m/s for 5.0s
a) calculate the work done by the normal force on
4 answers
asked by
lomonoyan
6,149 views
A hollow, spherical shell with mass 2.00 kg rolls without slipping down a slope angled at 38.0 degrees. (a) Find the
4 answers
asked by
Karla
12,751 views
There is a 100g mass sitting on the 10cm mark, and a 50g mass sitting on the 60cm mark. Force 𝐹 acts at the 30cm mark.
6 answers
asked by
Physics Student
4,089 views
1. The weight in the following diagram has a mass of 0.750 kg and the cart has a mass of 0.52 kg. There is a friction force of
5 answers
asked by
liz
5,447 views
A 61-kg skier, coasting down a hill that is an angle of 23 to the horizontal, experiences a force of kinetic friction of
5 answers
asked by
Tristan
4,163 views
A toy rocket has a mass of 350g at launch.the force it produces is 15N and it is fired at angle of 65⁰ to the horizontal.what
7 answers
asked by
Tesnim
1,122 views
When a particle located a distance x feet from the origin, a force of x^2+2x pounds acts on it. How much work is done in moving
4 answers
asked by
Anonymous
3,647 views
A body oscillates with simple harmonic motion along the x-axis. Its displacement varies with time according to the equation x=5
5 answers
asked by
veena
5,242 views
A piece of stone has volume 400cm³ and density 7800kg/m³. It is immersed totally in water of density 1000kg/m³. Calculate the
7 answers
asked by
Aditya Singh
1,816 views
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