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Mechanics
Page 5
Questions (40,149)
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
6,102 views
A 0.075 kg ball in a kinetic sculpture moves at a constant speed along a motorized conveyor belt. The ball rises 1.32 m above
10 answers
asked by
Brian
12,179 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
5,434 views
a car is moving at a constant speed of 20m/s^-1. The force retarding its motion is 500N. Calculate the engine power of the car
6 answers
asked by
Olivia
1,682 views
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
4,126 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
3,640 views
figure 3.1 shows a rectangular concrete slab of weight 18000N. It rests on a brick wall and is the roof of a bus shelter. The
6 answers
asked by
Atta
4,074 views
An elevator, with a total mass of 454 kg, accelerates downward at 3.51 m/s2. During this time, the tension in the elevator cable
4 answers
asked by
bano
2,795 views
A locomotive is pulling an empty freight car with a constant acceleration on a horizontal surface. The mass of the locomotive is
4 answers
asked by
bub
2,719 views
a man having a mass of 60 kg exerts a horizontal force of 200 newton in pushing a 90 kg object a distance of 60 meters along
5 answers
asked by
komal yaseen
4,185 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
1,027 views
An airplane is heading due east with an airspeed of 220km/h when it encounters a wind from the south at 76km/h. What is the
5 answers
asked by
Sara
1,990 views
A load of 4N extends a spring by 10mm. What load would extend it by 15mm?
5 answers
asked by
Luyando
741 views
A 0.50 kg cue ball makes a glancing blow to a stationary 0.50 kg billiard ball. After the collision the cue ball deflects with a
5 answers
asked by
grey
2,971 views
Ronald Johnson, who is 80.0 kg, is running at 4.00 m/s when he suddenly jumps onto a stationary playground merry-go-round at a
4 answers
asked by
J
908 views
A metre rule is pivoted at it's centre.A glass block is hanged from one end and the rule is balanced horizontally by hanging
4 answers
asked by
Prisca
317 views
The moment of inertia of a solid uniform sphere of mass M and radius R is given by the equation I=(2/5)MR2 . Such a sphere is
4 answers
asked by
Anonymous
4,188 views
A bullet of mass 15g is short from a gun 15kg with a muzzle velocity of 200m/s if the bullet is 20cm calculate;(a)the
3 answers
asked by
mike
323 views
Use the image to answer the question.
An illustration shows three coiled wire springs stretched to varying lengths. The first
7 answers
asked by
:p
84 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
20 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
14,803 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
3,155 views
A glider on an air track is connected by springs to either end of the track. Both springs have the same spring constant,k , and
7 answers
asked by
annie
5,844 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
2,908 views
A uniform harf metre rule is freely pivoted at the 15cm mark and it balances horizontally when a body of mass 40g is hung from
5 answers
asked by
Inyass
811 views
What is the spring constant of a spring that stretches 2.00 cm when a mass of 0.600 kg is suspended from it?
Answer i know the
5 answers
asked by
v
8,184 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
98 views
A net force is applied to a moving object, which statement best describes the effect of the force
4 answers
asked by
Star
832 views
a string can hold up 12 kg without breaking. You tie the string to a 30kg object sitting on ice and use it to pull the object
5 answers
asked by
John
3,276 views
1) When a pendulum 0.5m long swings back and forth, its angular displacement Ɵ from rest position, in radians is given by
5 answers
asked by
Hyde
3,823 views
If the coefficient of sliding friction for steel on ice is 0.05, what force is required to keep a man weighing 150 lbs moving at
5 answers
asked by
Angel
3,605 views
During a crash, a dummy with a mass of 60.0 kg hits an airbag that exerts a constant force on the dummy. The acceleration of the
7 answers
asked by
smxnsmn
7,403 views
A hydraulic plunger has a 12 cm diameter and a force of 350 kN acts on it. What is the pressure exerted on the plunger?
4 answers
asked by
jay
1,933 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
772 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
1,961 views
The force which is required to move an object of mass 500g to a distance of 4m
5 answers
asked by
Teri
2,470 views
A box weighing 20 N, resting on a ramp, is kept at equilibrium by a 4N force at an angle of 20 degrees to the ramp, together
4 answers
asked by
Anonymous
1,018 views
1.For the following simple see-saw calculate: 1. the load that could be lifed, 2. the maechanical advantage (assume the lever is
18 answers
asked by
Eleni
4,190 views
A simple lever is used to lift a heavy load. When a 60-N force pushes one end of the lever down 1.2 m, the load rises 0.2 m.
7 answers
asked by
Peg
11,435 views
A stone is suspended from the free end of a wire that is wrapped around the outer rim of a pulley, as shown in the figure (see
4 answers
asked by
Anonymous
12,475 views
A ball mass 1000g is drop from a height Of 5m and rebounded to a height Of 25 m. Find i it kintentic just before impact ii its
9 answers
asked by
Anonymous
3,328 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
5,360 views
A water-skier is being pulled by a tow rope attached to a boat. As the driver pushes the throttle forward, the skier
4 answers
asked by
Brookeneed
6,984 views
A 60.0 kg person rides in elevator while standing on a scale. The elevator has an acceleration 2.00 m/s^2 upward. What is the
5 answers
asked by
Anonymous
14,278 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
12,744 views
A flywheel is making 180 r.p.m. and after 20 seconds it is running at 140 r.p.m. How many revolutions
will it make, and what time
7 answers
asked by
joel
6,798 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
1,112 views
A pair of students are lifting a heavy trunk on move-in day. (Figure 1) Using two ropes tied to a small ring at the center of
4 answers
asked by
physic ----please help
3,511 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
3,993 views
A 1000 kg car is rolling down the street at 2.5 m/s. How fast would a 2500 kg car have to collide into it in order to bring it
5 answers
asked by
eileen
4,652 views
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