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Mechanics
Page 8
Questions (40,202)
You drive down the road at 39 m/s (88 mi/h) in a car whose tires have a radius of 34 cm.
What is the period of rotation of the
6 answers
asked by
anonymous
6,067 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
14,807 views
If a 2000kg coaster is moving at 10 m/s on the top of the loop, what is the magnitude of the normal force that the track applies
7 answers
asked by
tyger2020
1,271 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
196 views
A 1000kg load is suspended from the end of a horizontal boom. The boom is supported by a cable that makes an angle of 35deg with
5 answers
asked by
Shaila
2,914 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
224 views
What is the advantage of class 3 lever?(1 point)
Responses It decreases the distance over which force needs to be applied. It
1 answer
asked by
Water
107 views
A vehicle is travelling 1.0 x 102 km/h. What is the speed of the vehicle in metres per second?
4 answers
asked anonymously
94 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
143 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
1,845 views
What is the upthrust force on the boat when a small boat weighs 1000newton float in water?
2 answers
asked anonymously
142 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
463 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-
1,218 views
If a wheel turning at a constant rate completes 100 revolutions in 10 sec what is its angular speed?
5 answers
asked by
Anonymous
9,359 views
A rider with his bike, weighing a total of 300 kg jumps off a sloped ramp with a speed of 5.5 m/s. How high will the biker jump
5 answers
asked by
tman
1,381 views
A machine has a velocity of 6 and is 80% efficient.what effort will be needed to lift a load of 300N with the aid of this
10 answers
asked by
Dorothy
3,399 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
3,369 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
1,566 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
1,390 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
1,820 views
You drop the rubber ball from height h it bounces back to 60% of its original height. Write an equation you can use to find the
9 answers
asked by
Need Help
4,099 views
250 g ball of putty moving horizontally at 9 m/s collides with and sticks to a block lying on a frictionless horizontal surface.
5 answers
asked by
PHYSICSSSS HELP
1,313 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
5,177 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
2,167 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
2,955 views
What is the same sprinter’s velocity if she has a momentum of 400 kg m/s?
4 answers
asked by
ramon
1,740 views
The force which is required to move an object of mass 500g to a distance of 4m
5 answers
asked by
Teri
2,475 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
1,860 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
766 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
1,023 views
What is the centripetal acceleration of a satellite orbiting Saturn at the location exactly on Saturn radius above the surface
4 answers
asked by
Farah
1,544 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
445 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
2,042 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
12,461 views
A 4kg block is lowered down a 37° incline a distance of 5m from point A to point B. A horizontal force (F = 10 N) is applied to
4 answers
asked by
ATT
10,674 views
2. At time t =0, the current to the dc motor is reversed, resulting in an angular displacement of the motor shaft given by θ =
6 answers
asked by
bruce
10,064 views
A spring oriented vertically is attached to a hard horizontal surface as in the figure below. The spring has a force constant of
5 answers
asked by
Abdul
6,117 views
A 0.25-kg block oscillates on the end of the spring with a spring constant of 200 N/m. If the oscillation is started by
5 answers
asked by
Huhu.
7,976 views
a 1.4 kg block slides across a rough surface such that it slows down with an acceleration of 1.25 m/s2. What is the coefficient
5 answers
asked by
ellimac
5,368 views
a 300kg piano is being lifted at a steady speed from ground level straight up to an apartment 10.0m above ground. The crane that
6 answers
asked by
Delli
6,908 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
7,927 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
13,450 views
A 0.50 kilogram ball is thrown vertically upward with an initial kinetic energy of 25 joules. Approximately how high will the
5 answers
asked by
lucy
11,972 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
8,527 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
5,440 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
4,169 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
2,957 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
2,373 views
A 1.5-kg cart is pulled with a force of 7.3 N at an angle of 40° above the horizontal. If a kinetic friction force of 3.2 N
4 answers
asked by
joe
4,005 views
A man whose mass is 70 kg walks up to the third floor of a building. This is a vertical height of 12 m above the street level.
(a
4 answers
asked by
pakilina
4,058 views
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