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Mechanics
Page 8
Questions (39,953)
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
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
1,512 views
Use the equations below:
P=mv Ek=1/2mv^2 4) A wooden target of mass 2.00kg is suspended from a branch so that it swings freely.
7 answers
asked by
cake
1,259 views
A trunk weighing 562 N is resting on a plane inclined at 30.0o from the horizontal. Find the components of the trunk's weight
4 answers
asked by
Anonymous
888 views
How much work must be done to stop a 1250 kg car traveling at 105 km/h?
10 answers
asked by
Emily Grossman
13,783 views
a rock is dropped from a high brige.at the end of 3 seconds of free fall the speed of the rock is:[in centimeters per
5 answers
asked by
komal
5,476 views
If a man weighs 900 N on the earth, what would he weigh on jupiter, where acceleration due to gravity is 25.9 m/s^2?
10 answers
asked by
Godwin
23,962 views
a small rock with mass 0.20 kg is released from rest at point A which is at the top edge of a large, hemispherical bowl with
5 answers
asked by
Frankie
19,120 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
10,049 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
4,439 views
You stand at the bottom of an 8.0-m-long ramp that is inclined at 37∘ above the horizontal. You grab packages off a conveyor
6 answers
asked by
Kallian
2,430 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
6,873 views
a model of a helicopter rotor has four blades, each 3.40 m in length from the central shaft to the tip of the blade. The model
4 answers
asked by
Sarah
13,415 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
1,667 views
A body of mass 2kg moving with velocity of 5m/s collides with a stationary body of mas 500g. if the two bodies move together
9 answers
asked by
Ritanoe
4,471 views
The four tires of an automobile are inflated to an absolute pressure of 2.0*10^5 Pa. Each tire has an area of 0.024m^2 in
6 answers
asked by
Sarah
15,466 views
an astronaut on the planet zircon tosses a rock horizonally with a speed of 6.95 m/s. the rock falls through a vertical distance
5 answers
asked by
taylor
8,425 views
A 10 cm long, 2cm wide wooden wedge is pushed into a soft wood block.calculate: a) the velocity ratio of the wedge b) the load
7 answers
asked by
Huseen
3,787 views
The period of motion of an object-spring system is T = 0.474 s when an object of mass m = 296 g is attached to the spring.
(a)
4 answers
asked by
Ame
7,185 views
A ball is dropped from a height of 10 feet and bounces. Each bounce is ¨ú of the height of the bounce before. Thus, after the
6 answers
asked by
Sandy
7,757 views
A 500.0 g bird is flying horizontally at 2.25 m/s, not paying much attention, when it suddenly flies into a stationary vertical
5 answers
asked by
Alex
7,494 views
On a frozen pond, a 13.9 kg sled is given a kick that imparts to it an initial speed of v0 = 1.81 m/s. The coefficient of
5 answers
asked by
taylor
3,864 views
The shock absorbers in the suspension system of a car are in such bad shape that they have no effect on the behavior of the
5 answers
asked by
Catherine
3,090 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
4,055 views
a traffic light is supported by two cables that are 140 degres apart. Each cable exerts a tensile force of 150 N on the night.
4 answers
asked by
idk
2,481 views
a 100N force is applied at an angle of 30 degrees horizontal to move a 15kg object at a constant speed for a horizontal distance
5 answers
asked by
Layne
7,911 views
20.) A piano has been pushed to the top of the ramp at the back of a moving van. The workers think it is safe, but as they walk
4 answers
asked by
Anonymous
4,833 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
2,695 views
You are riding your bike and the tire has a radius of 0.33 m and mass 1.5 kg rotating at 98.7 rad/s. You just notice you are
4 answers
asked by
Anonymous
4,150 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
4,171 views
a ball of mass 0.2kg is dropped from a height of 20m on impact on the ground it lose 30j of energy.calculate the height which it
6 answers
asked by
Anonymous
2,682 views
a mover uses a ramp to pull a 1000 newton cart up to the floor of his truck 0.8 meters high if it takes a force or 200 newtons
7 answers
asked by
hunter
4,490 views
A 5-kg block lies on a smooth table top. A horizontal string connected to the block is passed over a small pulley at the edge of
4 answers
asked by
Rhian
2,464 views
"Two springs are hooked together and one end is attached to a ceiling. Spring A has a spring constant of 25N/m, and spring B has
5 answers
asked by
Stuck
2,976 views
A 1000-kg car is driving toward the north along a straight road at a speed of 20.0 m/s. The driver applies the brakes and the
5 answers
asked by
Christine
5,386 views
The Olympic diver completes 3.5 somersaults in 1.7 seconds. What is the average angular speed (in rad/s) of the diver?
5 answers
asked by
Joe
1,966 views
A solid of mass 1.3kg suspended by a string,is completely immersed in water. If tension in the string is 6.0. Find the upthrust
6 answers
asked by
Anonymous
1,356 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
1,886 views
What is the average power output of a weightlifter who can lift 260 kg to a height of 1.9 m in 1.8 seconds?
5 answers
asked by
Ash
6,649 views
When a force of 50N is applied to the free end of an elastic cord, an extension of 4cm is produced. Calculate the work done on
4 answers
asked by
Joshua
800 views
When a mass is attached to a vertical spring, the spring is stretched a distance d. The mass is then pulled down from this
4 answers
asked by
please help!!!!
1,694 views
The radius of the Earth is approximately 6000 km. The acceleration of an astronaut in a perfectly circular orbit 300 km above
7 answers
asked by
Hannah
6,207 views
A 0.165-kg ball, moving in the positive direction at 10 m/s, is acted on by the impulse shown in the graph below. What is the
5 answers
asked by
Lisa
2,264 views
A 65 kg dancer leaps .32 m high.
a) With what momentum does the dancer reach the ground? b) What impulse is needed to make a
5 answers
asked by
Einstein
2,276 views
You are playing with a yo-yo with a mass of 225 g. The full length
of the string is 1.2 m. (a) Calculate the minimum speed at
5 answers
asked by
kenny
742 views
A rock dropped from the top of a building takes 0.55 s to fall the last 50% of the distance from the top to the ground.How tall
6 answers
asked by
Anonymous
2,827 views
A body weight 0.3N in air,0.25N when fully immersed in water and 0.27N when fully immersed in liquid. calculate a. It's water
5 answers
asked by
Elias
475 views
At an instant when a particle of mass 80 g has a velocity of 25 m/s in the positive y direction, a 75g particle has a velocity
4 answers
asked by
ATT
1,818 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
1,971 views
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