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Mechanics
Page 7
Questions (39,952)
Find the effort of a machine whose mechanical advantage is 3 where load is 30N
5 answers
asked by
Anonymous
1,514 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
673 views
a cannon is 80 feet long. the muzzle velocity = 960 ft / sec. if fired strait up, what is the maximum height
4 answers
asked by
josh
759 views
Morana is trolling for salmon in Lak Ontario. She sets the fishing rod so its tip is 1 m above the water and the line enters the
4 answers
asked by
Kim
1,601 views
When a mass of 50g is hung from 5cm mark of a uniform meter rule. The rule balance on a knife edge placed at the 35cm mark .
4 answers
asked by
Pauline
1,632 views
a model rocket is projected straight upward from the ground level. It is fired with an initial velocity of 192 ft/s. How high is
4 answers
asked by
Rick
1,962 views
Which of the following is the correct equation for Στ for the given rotation axis? All rotation axes lie on the x axis and
3 answers
asked by
Jimmy
1,355 views
Physics A Semester Online Practice
1. A wall measures 4.20 m ± 0.01 m by 3.10 m ± 0.02 m. What is the approximate percent
2 answers
asked by
Anonymous
411 views
A 5.00-kg box is suspended from the ceiling by a cord that is 50.0 cm long. A 10.0-g bullet was fired horizontally with speed at
3 answers
asked by
Candu
649 views
A cart full of packages weighing 180 pounds is rolling down a ramp 12 feet long at an incline of 25° (the force applied by
4 answers
asked by
Elise
687 views
a 10-m uniform beam of weight 100N is supported by two ropes at the ends. If a 400N erson sits at 2.0 m from the left end of the
4 answers
asked by
lulu
4,785 views
A mass m is attached to a spring of constant k. The spring oscillates in simple harmonic motion (amplitude A). In terms of A:
a)
4 answers
asked by
Joe
617 views
A density bottle weighs 0.25N when empty, 0.75N when filled with water and 0.65N when filled with alcohol.Calculate:
a.volume of
6 answers
asked by
Hera
1,887 views
A box sliding down a frictionless plane inclined at an angle 35 degrees with the horizontal. What is the acceleration of the
3 answers
asked by
YESHA
1,088 views
9. The flywheel shown in Figure 14.8 may be considered to be a steel
cylinder (density 7800 kg m−3) of outer radius 40 cm and
1 answer
asked by
Shrish
465 views
A turtle moves 3.5m [E] in 136 s and then moves 1.7m [W] in 88 s.
a) What is the average speed of the turtle? b) What is the
5 answers
asked by
Anonymous
549 views
A frictionless pendulum has a length of 1.2 m and a mass of 0.8 kg. If the pendulum is raised to an angle of 50 degrees before
1 answer
asked anonymously
117 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
6,729 views
What is the significance of the fact that both the horizontal force and motion are both forwards?
4 answers
asked by
Diane
780 views
A mechanic wants to use a compound pulley to lift a go-kart from the ground to work table, a distance of 1.2 meters. Without the
4 answers
asked by
the real BARNY THE DINO :)
639 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
873 views
A 22.0 kg child plays on a swing having support ropes that are 2.00 m long. A friend pulls her back until the ropes are 45.0 ∘
4 answers
asked by
Justin
8,226 views
Forces 10N and 50N are to be balance at the end of 1m long lever.Where should be the position of fulcrum?
5 answers
asked by
Manash
884 views
Three objects are moving along a straight line as shown in the figure. Taking the positive direction to be to the right, what is
7 answers
asked by
Anonymous
14,789 views
A disk of radius 12 cm, initially at rest, begins rotating about its axis with a constant angular acceleration of 7.8 rad/s2.
5 answers
asked by
Kayla
2,097 views
A person hits a 45-g golf ball. The ball comes down on a tree root and bounces straight up with an initial speed of 14.0 m/s.
4 answers
asked by
Caitlin
2,288 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
3,121 views
How many seconds would it take a 7.00hp motor to raise a 475 lb boiler to a platform 38.0 ft high?
4 answers
asked by
sean
1,292 views
1. A spring bearing a 10-pound weight has stretched 0.5 inches. If you were to increase the weight to 15 pounds, how many inches
2 answers
asked by
Muzammil
268 views
A particle in simple harmonic motion has a period of 0.4s. If the maximum speed attained during the motion is 0.3s, what is the
4 answers
asked by
Olajumoke
928 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
4,040 views
Calculate the resultant of five coplanar forces of values 10N,12N,16N,20N,15N acting on an object at 0
9 answers
asked by
Jane
3,503 views
A mass sitting on a horizontal, frictionless surface is attached to one end of a spring; the other end is fixed to a wall. 1.0 J
5 answers
asked by
Dan
6,006 views
m1 = 2.7 kg block slides on a frictionless horizontal surface and is connected on one side to a spring (k = 40 N/m) as shown in
5 answers
asked by
mary
4,122 views
What is the effect of using an inclined plane to lift an object?
7 answers
asked by
Linda Emory
87 views
The displacement of a particle with a mass of 225 g depends on time and is described by the function x(t) = -3.0t3 + 2.0t2 +
3 answers
asked by
Deadrea
117 views
A person using a lever applies 98 Newtons to lift a 20-kilogram box. They apply the force over a distance of 4 meters to lift
1 answer
asked by
kriox
214 views
A net force is applied to a moving object, which statement best describes the effect of the force
4 answers
asked by
Star
802 views
A 2.00-kg sphere is rotating about an axis through its center at 40.0 rev/s with the angular velocity in the +z direction. A
4 answers
asked by
Elyse
2,177 views
The figure shown the chain drive of a bicycle. How far will the bicycle move if the pedals are rotated at 180°. Assume the
5 answers
asked by
paula
6,162 views
A car initially at rest travels for 2 minutes with a uniform acceleration of 0.3 m/s^2,after which the speed is kept constant
5 answers
asked by
Bernard
1,075 views
An arrow, starting from rest, leaves the bow with a speed of 25.0 m/s. If the average force exerted on the arrow by the bow were
4 answers
asked by
Scarlet
3,707 views
2.1 Two blocks of mass M kg and 2.5kg respectively are connected by a light, inextensible string. The string runs over a light,
7 answers
asked by
Pamela
2,753 views
calculate the value of g at 1000m above the surface of the earth. The radius of the earth is 6378.1km
👍 👎
7 answers
asked by
B
811 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
1,742 views
a space traveller determines the radius of a planet to be half of earth . After landing on its surface , he finds the
5 answers
asked by
hanu
4,367 views
A falling boulder hits the ground at a velocity of 15 m/s, losing 1,200 kg m/s of momentum to the Earth when it stops. What is
4 answers
asked by
asdf
1,480 views
explain in your own word why is it acceptable to take displacements of the trolleys x1 and x2 as a measure of the velocities of
4 answers
asked by
ali
1,032 views
Where is the fulcrum in this situation?
(guy lifting a rock with a bar) It is the point where the bar touches the smaller rock.
4 answers
asked by
Subzero
749 views
Initially, a spring-mass system completes 20.0 vibrations in 5.0 seconds, with a 2.0 cm amplitude.
The same mass is pulled 5.0 cm
4 answers
asked by
Jim
1,004 views
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