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Mechanics
Page 9
Questions (40,149)
A submarine at the surface of the ocean makes an emergency dive, its path making an angle of 21deg with the surface.
a. If it
5 answers
asked by
trigofunctions
4,757 views
Two forces 8N and 10N acts at 40 degrees to each other find the resultant force using the resolution of vector
10 answers
asked by
Dora
222 views
The path of water sprayed from a fountain is modeled by h=−4.9t2+58.8t,
where h is the height of the water in meters after t
3 answers
asked by
Ahmad
131 views
The graph in Figure 10-22 shows the force and displacement of an object being pulled.
Figure 10-22 (a) Calculate the work done to
6 answers
asked by
Manny Aragon
2,518 views
(Q1)A wire of cross- sectional area of 0.00006m2 and length 50cm stretches by 0.2mm under a load of 3000n.Calculate the Young's
4 answers
asked by
kate
1,837 views
What is the upthrust force on the boat when a small boat weighs 1000newton float in water?
2 answers
asked anonymously
137 views
A long jumper leaves the ground with an initial velocity of 12 m/s at an angleof 28°
above the horizontal. Determine the peak
3 answers
asked by
christian
454 views
a hockey stick has a mechanical advantage of 4. if the effort arm(which is the distance between the fulcrum and your pushing
4 answers
asked by
-haya-
1,211 views
the height that a ball bounces varies directly as the height from which it is dropped. A ball dropped from a height of 20cm
4 answers
asked by
lisa
3,049 views
A boy of Mass 20kg stands on a building floor 12m above the ground level. Calculate his potential energy.
7 answers
asked by
Lawal
890 views
A uniform have metre rule,pivoted at 20cm mark balances horizontally when a mass of 50g is suspended from 4cm mark calculate the
10 answers
asked by
Francis
5,832 views
A round bar 40mm diameter is subjected to an axial pull of 80kN and
reduction in diameter was found to be 0.00775mm. Find
5 answers
asked by
aswath
3,074 views
A stone of mass 20g is projected vertically upward with a catapult whose rubber has a force constant of 72Nm-1. If the tension
7 answers
asked by
Bukky
3,362 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
2,778 views
The diameter of the head of a screw nail is 4cm and it's pitch 0.5cm. If the nail can magnify the applied effort 20times
9 answers
asked by
Ram
1,563 views
An 8N force stretches a spring to the 20cm mark on a metre rule.if the extension on the spring is 4cm,calculate the original
5 answers
asked by
GEOFFREY
1,385 views
make m the subject of the formula mg-t= ma
5 answers
asked by
esther edomoh
543 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
1,755 views
A car is travelling along a straight road. The driver suddenly observes that the road ahead is flooded and applies the brakes.
De
4 answers
asked by
Mathew
3,078 views
Determine the linear velocity of a point rotating at 25 revolutions per minute at a distance of 2 feet from the center of the
4 answers
asked by
Patrick
1,812 views
Solve a man of mass of 90kg is moving at a constant velocity. He has kinetic energy of 2205J. Calculate his velocity.
12 answers
asked by
Favour
2,188 views
A bowler throws a ball down the lane toward the pins. The ball reaches the pins and slowly moves through them, knocking down the
4 answers
asked by
Ieasha30
1,073 views
A ball rebounds 1/2 of the height from which it is dropped. It is dropped 56m from the building and it kept bouncing. How far
5 answers
asked by
Aubrie
5,167 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
2,156 views
the general "hang time" of a punt is measured to be 4.5sec. if the ball was kicked @ an angle of 63deg. above the horizontal &
4 answers
asked by
Lisa
2,947 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
1,492 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
1,699 views
A balloon is rising with a velocity of 4.9 m/sec releases an object from height of 96 m. a) How long after its release will the
4 answers
asked by
Margie
1,855 views
A piece of metal weighs 50.0 N in air, 36.0 N in water, an 41.0 N in an unknown liquid. Find the density of the unknown liquid.
7 answers
asked by
Phillip
11,876 views
When there is a lot of friction in a machine, what is lowered and causes mechanical efficiency to be lowered
4 answers
asked by
antiana
1,393 views
9. A block attached to a spring of negligible mass undergoes simple harmonic motion on a frictionless horizontal surface. The
4 answers
asked by
gomez
2,048 views
A man whose mass is 25kg ran up a flight of 25 steps each 20cm height how much work did they man do?.
4 answers
asked by
Anonymous
442 views
A car and an attached trailer have a combined mass of 3,000 kg. The car and trailer are moving on the highway at a velocity of
4 answers
asked by
Faoruk
2,034 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
8,951 views
When a 58g tennis ball is served, it accelerates from rest to a speed of 45m/s. The impact with the racket gives the ball a
7 answers
asked by
Natasha
12,455 views
A 1000N crate is being pushed across a level floor at a constant speed by a force F of 300N at an angle of 20.0 degrees. (a)
5 answers
asked by
DROSP
29,056 views
How much work must be done to stop a 1250 kg car traveling at 105 km/h?
10 answers
asked by
Emily Grossman
13,791 views
Balance of vertical forces problem. Three balanced forces pull on a ring that is centered over a force table. Two forces F1 and
4 answers
asked by
Johnny
2,553 views
an object of mass 1kg falls a distance 5m on a horizontal surface and bounce to a vertical height of 2m.calculate the change in
12 answers
asked by
faith
4,451 views
a boy tosses a coin upward with a velocity of 14.7 m/s.
a. find the maximum height reached by the coin. b. time of flight c.
7 answers
asked by
jenalyn calimag
19,305 views
A mass of 0.55 kg attached to a vertical spring stretches the spring 36 cm from its original equilibrium position.
The
4 answers
asked by
Sean
11,590 views
A 75 g bungee cord has an equilibrium length of 1.20 m. The cord is stretched to a length of
1.80 m, then vibrated at 20 Hz. This
4 answers
asked by
Lucas
7,915 views
Identify the area of physics that is most relevant to each of the following situations. Explain your reasoning.
a. a high school
6 answers
asked by
Anonymous
13,444 views
A car with mass m possesses momentum of magnitude p. Which expression correctly represents the kinetic energy, KE, of the car in
5 answers
asked by
Anonymous
5,685 views
A thin uniform rod has a length of 0.550 m and is rotating in a circle on a frictionless table. The axis of rotation is
5 answers
asked by
Sarah
4,138 views
a force of 20N compresses a spring with a spring constant of 50N/m. how much energy is stored in the spring?
6 answers
asked by
kristen
8,520 views
An escalator carries 60 people of average mass 70 kg to a height of 5m in one minute.Find the power needed to do this.
6 answers
asked by
Sarah
4,162 views
A pool ball of mass 100g and velocity [5,-4]m/s collides with a stationary pool ball of the same mass. After the collision, the
6 answers
asked by
Sam
2,947 views
A 30-lb child is siting at A(2,3) and a 50-lb child is at B(12,7) where units are feet .Find the point P between A and B which
4 answers
asked by
neil
2,363 views
I need help with this question please. A solid cylinder of mass m and radius R has a string wound around it. A person holding
7 answers
asked by
Una
8,015 views
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